6Hp
A 9 ft. dinghy will need a minimum of ~6 Hp to make it plane with ONE person onboard. The Tohatsu 4,5-6 Hp are all the same engine, just different carburator throat, etc. sizes. To plane with more than one person you really need 8+hp. Tohatsu makes most of the powerheads for most all the other manufacturers. many are simple just different 'graphics'. best prices I found a few months ago was www.internetoutboards.com
A 9 ft. dinghy will need a minimum of ~6 Hp to make it plane with ONE person onboard. The Tohatsu 4,5-6 Hp are all the same engine, just different carburator throat, etc. sizes. To plane with more than one person you really need 8+hp. Tohatsu makes most of the powerheads for most all the other manufacturers. many are simple just different 'graphics'. best prices I found a few months ago was www.internetoutboards.com