I have a 10ft Bass striker (square bow) and a pre 1980 Yamaha 8hp tiller arm motor.<br /><br />I have tried numerous things to improve performance which include sitting further towards the front of the boat and adjusting the trim. The boat now almost planes but are there any other adjsutements I can make to improve performance without incurring additional costs? Possibly lifting the motor?<br /><br />Any suggestions will be most appreciated.