Jackplates and extension on aluminum boats

[Bobber1]

I have a new 1750 Crestliner Fishhawk with a Yamaha F115 fourstroke. The transom is a 25" and I have the longshaft motor. I know with glass boats a transom jackplate can make a difference in lowering drag from the lower unit and set the motor back in less turbulent water. My question is...is this safe to do on aluminum boats? It is an all welded hull and built for the weight of the motor but will the extra 6" offset hurt?

Thanks in advance.
Bobber

[Capt. Chris]

Bobber,
Adding a jackplate should be ok on your boat. Just don't plan on a transom bracket that would be trouble! The jackplates usually work better on lighter hulls and especially for the dough you will put out for a good one. You might not be happy with the little benefit you'll gain. Good luck and welcome.
Capt. Chris

[Bobber1]

Sorry what do you mean by a transom bracket? The Jackplate I have is a Highjacker with a 4" adjustment for vert. and it provides 6" setback.

[Capt. Chris]

Bobber ,
A transom bracket actually bolts to the transom and sets your motor 18-29" back off the boat . Look at Stainless Marine, Gil Marine, Armstrong or Seamount to get an idea of what I mean. You need some serious transom for these brackets!

Chris

[Bobber1]

Thanks for clearing that up Chris. 6" is a benefit 18" to 24" would be better but that would indeed put a strain on the transom.

Thanks Again
Bobber

[HelmetHead]

Bobber1,
We have a jack plate on our flounder boat....sets motor 6" rearward from transom...and gives ~4" of vertical travel. Works great...no problems.