new to ribs advice please!!

[xs 400]

I have a 4m med v hull with a 30hp 2 stroke Yamaha

the performance is ok but it is a little slow to get on the plane and top speed is 26 mph

how can I improve this without buying a bigger engine?????

spec. prop 9 7/8 x 13f engine low hours no issues , doel fins on engine, no rev counter so dont know flat out revs (but dont seem high)

[Channel Ribs]

I think your other thread about a different prop is worth a go, but a 4m RIB with 30HP is not going to be super-quick unfortunately.

For comparison we have supplied many SIBs, which would be lighter than your XS, with 30HP engines and customers have given thought to upping slightly to a 40HP or even a 50HP in some cases.

PS The fins will help with trim and therefore getting on the plane, but will eat into your tops speed.