what prop

[eaj]

v20 with 90 yamaha what prop 17 or 19 also need to get a full cover thanks eaj.

[RidgeRunner]

15p may put it on plane. I have a 17p Mirage on a 200 Merc that turns the proper RPM. IMO, no way will a 90 hp Yamaha turn a 17 let alone a 19. I know you will have more responses.

[macojoe]

Go out on flat days and just tool around, cause I don't think you ever getting on plane with that set up!

[Destroyer]

Sorry to be the bearer of bad news, but you have too much boat for that engine, no matter what prop you have on it.

I had a V20 I/O with a 95hp engine.. on a good day with a tail wind and flat water I still couldn't get it up on plane, no matter what the trim of the boat. I came close a few times, but close doesn't make it. You need at least a 125 (IMHO).

[Skools Out]

you may need a 13p or maybe a 15p but more towards a 13 with that small a motor.

[RidgeRunner]

you may need a 13p or maybe a 15p but more towards a 13 with that small a motor.

X2 wit the 13P. Doel Fin, Trim Tabs and lighten her up as much as possible. I really like the 90 Yamaha but the boat would do better with two of them. My good friend had a 17' Chrysler Tri-hull with a 50 Johnson. It was a slug out of the hole and everywhere else but it worked. I hope the 90 will put it on plane. The hulls are efficient but I have the same doubts as Destroyer and MJ.

[spareparts]

add another 90 Yamaha. That would be a cool set up