Testing the new Hydrofoil to see what it does to my boat

I have 2 inflatables with outboards , without the Whale tails ( Hydrofoils ) they perform poorly. With the Whale tails, they jump out of the hole and blast.

To utilize the most of a se200 hydrofoil fin a hydraulic jackplate makes a difference when paired you keep the speeds up same time and have benefits of having the fin same time

You should look into a Hydro-Shield. Its a hydrofoil that bolts to your skeg and runs underneath the prop. Now its always in the water and always helpful, unlike the whale tail type you just tested. Disclaimer, i haven’t actually used/tested one myself but the interwebs has received them kindly.

I think I like those glasses, hehe. Do you have a link.

It’s a leveler

For all the people saying you need to go down a pitch on your prop, I think you also need to go up in power. If you're not willing to go up a weight class, look for the highest HP that's within 50 pounds of your current motor's weight. If you ARE willing to go up a weight class, or even TWO, you can get a 60-115HP modern engine, or you can stay pretty light with an old-school 2-stroke 90hp or so 3-cylinder.

Do you need anything over 90? No, not unless you're a true speed demon, then you go 115-175. But 60-90 will do you DAMN good, and IMO you need AT LEAST a 40 on that boat for it to get out of its own way. Most of the realistic issues with motors are weight, though, so if you find that 40s, 50s and 60s all weigh the same, then there's no sense going for the 40 when you can run a 60, have power to spare for more weight, run at a lower RPM for planing cruise at the same or potentially better fuel efficiency, AND have more "clout" for running a bigger motor.

And if you're worried about cops, a 60 won't look out of place and a 90 might get a chin scratch or two. Either way, you can register the boat differently so there won't be issues, and/or you can just put a smaller sticker on it, as long as it's relatively believable. (Nobody will believe a 90hp sized cowl is only covering 15hp or 25hp, but they might believe a 90 is a 60 or a 60 is a 40)

I have a 300 on my 16' StarCraft DC w/60hp Merc. Boat planes
@ 3500rpm. Noticably more stable, better gas consumption, but not as fast top speed by about 5mph. Not a concern. Performance 50% better OA. IMO, smaller boats would benefit in planing performance and particularly stability from using a hydrofoil.

Basically a trim tab added to the motor?

When you get to wide open throttle trim the engine up some and you will turn more rpms and get better top speeds

WOT should be around 5600 you should drop a pich in the prop. As well as I didn't see you trim up at all after on plain you should trim up a little bit just hold the trim up button for second and you will feel the backend rise up.

Auto (sprung) transom tabs will produce better handling and fix your trim issue in the transition range without sacrificing so much at WOT. The foil produces cavitation at a certain speed which you are most definitely exceeding (probably about 18 knots.) You may also want to investigate how much negative transom angle you have. I know a lot of older runabouts have a 0 degree transom which doesn’t give the prop a negative angle of attack to facilitate lower speed planing. A simple fix for this problem is installing a stand-off with a few degrees of negative angle between the motor mount and transom.

I put a white 30 on my 16'.👍

There is nothing wrong with that. Great little boat

You need same to go down at minimum 1 pitch in that prop 2 pitch reduction would be perfect for when you have passangers. If its speed and 1 person. Reduce 1 pitch if its overall performance go down 2 pitches or 3 i think you gain 200 or 400 rpm per drop in pitch. Read up on it. But if I'm correct i think that motors max efficient running rpm is 5600 rpm but don't quote me.

Torque Prop, How about explaining its a lower pitch prop so most people know what your talking about?

two words FLOAT PODS ! There not just for johnboats anymore

What kind of sonar are you using that you can still read the bottom at those speeds?

Trim is to far in!

I put a hydrofoil on my 22 Mako. The Hydrofoill made a big positive difference in planing and top end speed.

If you want to go faster with the hydrofoil then you got to trim your motor up and it will give you the top speed you’re looking for.