Simply put strakes if well arranged will permit your boat to level out sooner then without them but thats about it on a pontoon boat.
Putting lifting strakes on a pontoon. My problem is that the best I can do before prop blowout occurs is about 4200 RPM. Plus another advantage is the full aluminum underskin on the blue pontoon that is not on the other one. No use adding any more power as it wont do any good.
The two choices you have are to fully weld the strakes or remove them plug the leaks and then re-weld them on. I have a 2010 24 Bentley Encore pontoon that I recently repowered with a Merc 150 4 stroke. If the strake is on the outside of the outermost pontoon and you turn to that side the strake will keep the inside from dipping into the waterfor the turn.
The pontoons are 23 inches by 24 foot 3 inches with the 3 inches sitting aft of the stern. After discussions with motor dealer and talking with Bentley reps the prop I have on it now is a 157515 pitch SS prop. This process reduces the drag.
The lifting action of. Many lifting strakes use negative angles which can generate lift but can hurt the quality of the ride due to increased slamming loads. Its such a fine process like has been said get the exact strake and put in the exact location.
If it tries to go OVER or if it wont make it all the way UP then you are leaving speed on the table. With strakes a pontoon becomes a planinf hull it moves over the top of the water instead of through it. 2015 Qwest LS 818XRE Tri-toon wmercury 115.
These boats were identical in almost every way possible but we were a little disappointed to find out that the blue Sweetwater has lifting strakes on the inside and outside of the pontoons while the tan version only has TAP Fins on the inside. The only thing that improves pontoon boat speed is more power. The theory on not putting the lifting strakes on the outside of the pontoon is so it can lean in a turn like a traditional v-hull.