I've also got the Easy Troller with hydrofoil fins on a Honda BF-90 4 stroke on an 18-ft Alumacraft Magnum 175cs. Since my boat is a little bow light, the fins help with control and planing quicker at low speed. Seems to run nice at high speed too. At first I thought it took about 2 mph off my top end speed(about 33-34 mph before), but I found that if I adjusted the tilt up a little bit (which I normally run all the way down at high speed), I found a sweet spot where I got most of the speed back, maybe I lost 1 mph. All in all, I'm very happy with it, just wish I could get up to Winni soon...
Another thing, it definitely helps in trolling in rough water as others have posted.
Im a bit late one this but here's my 2 cents.I just put an 8 hp kicker on my boat and my main thing is keep the hours of use off the $6,000.00 motor and put them on a cheaper and more fule friendly 8hp.
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