Jon Boat Stability Questions

Discussion in 'Boat Design' started by SmallLight, Nov 2, 2025.

  1. portacruise
    Joined: Jun 2009
    Posts: 1,613
    Likes: 216, Points: 63, Legacy Rep: 218
    Location: USA

    portacruise Senior Member

    Another thing to consider is the use of a GPS lock motor, which is used by some fisherman to hold position. Fast and simple compared to using two anchors to minimize swing. But I don't have any experience with these myself, and don't know what their limitations are.
     
  2. SmallLight
    Joined: Aug 2025
    Posts: 21
    Likes: 9, Points: 3
    Location: Ontario

    SmallLight Junior Member

    portacruise likes this.
  3. gonzo
    Joined: Aug 2002
    Posts: 18,040
    Likes: 2,263, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    bajansailor likes this.
  4. portacruise
    Joined: Jun 2009
    Posts: 1,613
    Likes: 216, Points: 63, Legacy Rep: 218
    Location: USA

    portacruise Senior Member

    Stake-Out poles are probably better then GPS lock in shallow water, if within their depth limit. They and anchors cannot be used on public Rivers where the land underneath the water is owned by private landowners in the USA. Stake poles protrude upward when not in use and might have to be removed from their holders when there's tree branches overhanging River waters.
     
    montero likes this.
  5. montero
    Joined: Nov 2024
    Posts: 727
    Likes: 81, Points: 28
    Location: Poland

    montero Senior Member

    Interesting .
     
  6. Barry
    Joined: Mar 2002
    Posts: 2,022
    Likes: 627, Points: 113, Legacy Rep: 158

    Barry Senior Member

    Frog boat.png

    I would consider a Frog Boat as shown. They have detachable sponsons, light weight and CHEAP, Will accommodate a 1.9 kw motor--- 2 1/2 hp motor. Stable, no trailer. Check them out on
    You Tube

    https://static1.1.sqspcdn.com/static/f/956000/28409334/1614644413893/The-Frog-Boat-Brochure-2021.pdf

    OR
    Some interesting possibilities and discussion here
    Best Fly Fishing Boats: Catch More Fish With A Boat 2025 https://troutandsteelhead.net/fly-fishing-boats/

    I especially like the stand up pontoon, (I know that you did not want an inflatable) as the seats are high and comfortable and the stability unmatched.
     
    bajansailor and portacruise like this.
  7. gonzo
    Joined: Aug 2002
    Posts: 18,040
    Likes: 2,263, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    It doesn't look that cheap; particularly if you add the sponsons and other attachments.
     
  8. Barry
    Joined: Mar 2002
    Posts: 2,022
    Likes: 627, Points: 113, Legacy Rep: 158

    Barry Senior Member

    1400 Canadian dollars and the OP is in Canada so no tariffs

    He is considering a Vancouver Island Lifetimer boat so the freight should be cheaper with the Frog as it has lower volume for shipping and is lighter
     
    Last edited: Nov 9, 2025
    portacruise, SmallLight and BlueBell like this.
  9. Barry
    Joined: Mar 2002
    Posts: 2,022
    Likes: 627, Points: 113, Legacy Rep: 158

    Barry Senior Member

    Are you referring to the inflated collar being water tight or the joint between the rigid hull and the inflated collar?
     
  10. portacruise
    Joined: Jun 2009
    Posts: 1,613
    Likes: 216, Points: 63, Legacy Rep: 218
    Location: USA

    portacruise Senior Member

    Costco in Canada used to carry the Frog boat, a few years back, but I don't know the current status. I had forgotten about this FB design which would have a great advantage if a lot of time will be spent standing up. My expectations, it would be slow even at full power because of the four appendage drags adding to the hull drag. Probably not as good as other designs that have a stand-up lean bar for support as referenced in the second link. Single hull wide raft designs might be better for River applications, because of the moving water and Rapids where they can slide through more easily without hanging up. Rapids often have just below the surface hidden boulders- where the appendage parts or a second pontoon hull can get caught in between. North Fork Outdoors generally gets poor customer service ratings on the various fly fishing forums, but that may have improved somewhat in the more recent postings.
     
  11. TANSL
    Joined: Sep 2011
    Posts: 7,921
    Likes: 933, Points: 123, Legacy Rep: 300
    Location: Spain

    TANSL Senior Member

    LOL
     
  12. sharpii2
    Joined: May 2004
    Posts: 2,280
    Likes: 344, Points: 83, Legacy Rep: 611
    Location: Michigan, USA

    sharpii2 Senior Member

    I have some experience with small, aluminum jon boats. The one I remember was a 10 ft one which was used as an engineless tender at the marina I worked at.

    It leaked and was quite treacherous when stepped aboard.

    I had to use it so frequently that I was motivated to try to improve it. On my break, I chewed a bunch of gum and stuffed it under the loose rivets. After a few of these sessions, it no longer leaked. Next, I found a cinder block and placed it amidship.

    With these two changes, the boat became so stable that I could step off the dock onto the middle seat with no fear of an unscheduled swim.

    My present boat is a 10 by 3 ft sailing scow of my own design. I often stand up on its bottom to paddle it out into the lake to set sail. It was never intended to be propelled in this manner, but in calm water it works quite well.
     
    SmallLight likes this.

  • Loading...
    Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
    When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.