portacruise

Yes, I forgot Rick W. likes that design... Thanks!

Skinny mono with outriggers.

Wonder what kind of boat Greg K used? If it was a pontoon, there might be room for improvement with a mono and prop combo?

The 24 hr distance record for HPB has never been won by a horizontal fin drive, and none have ever competed, AFAIK. But that may change...

Small CO2 canister might be fastest, shooting controlled air leak out the back, if allowed? Rubber bands, springs, mouse traps, etc...

My humble thoughts are written within your last post. Sorry, I just don't see the advantage over a small or large helicopter converted...

Here's what I think of your design so far: 1. Amphibious: usefulness limited to specific areas were airports are rare or expensive...

Maybe this guy can be of some help on scaling, he's always comparing efficiencies some with different scale models,

Sometimes a flexible sheathed SS push-pull cable has solved close quarter and sharp angle issues for me, in addition to some above...

If a wave hits the floats above water, the construction and materials will be shock tested at high stress. It has to be sturdy...

If the pool noodles will be in frequent or continuous contact with water, it might might mean a considerable loss of hull efficiency has...

Consider a search for "minimal drag floats" on this list, for recently discussed options, as an example...

Thanks for the link, those were not available many years ago when I made mine. Amazon has a 15hp petrol for under $600, Ebay about 50%...

Thanks. I found this 20 hp electric long tail which isn't designed for open water. It would cost me an extra $7,600 compared to the 17...

Neat.. Thanks. I'm looking at a IP68 submersible motor swinging a 10" surface piercing prop. I would have to water cool the motor if I...