Riviera 30ft flybridge

Hi I own a 30 ft riviera with a 165 Volvo Penta with a 280 duo prop stern drive and when driving the boat it's very hard to keep in a straight line; you're for ever turning the wheel and it gets worst the faster you go and I was just seeing if I put fins on the stern drive will this change any thing and also what would the motor weigh the model is a aqad40b as I'm thinking of taking the motor out for abit of work do I have to take the leg off first to get the motor out or can I take the motor out with out taking the boat out of the water

 

Post some photos if you can. Does your boat run bow down and bow steer? Also how tight is the steering system. Can you wiggle the stern drive from side to side?
You will have to pull the boat out of the water, remove the drive, and lift the engine with an overhead hoist.

 

What direction are you travelling relative to the waves when it needs steering correction ?

 

from memory I think the Volvo's can be un bolted at flywheel housing and removed without touching the drive. it can be done in the water. check your leg pivot bushes for play and all the joints through to the steering wheel.

 

you can take the engine out without taking the drive off.

Just put on some hydraulic steering and your (steering) problems wil be solved

 

the op has not posted since he started the thread. waste of time trying to help.