Greetings,
I somehow doubt that this boat will plane (as touted in the link) with 2.5HP, especially while carrying a "collared shirt and a cotton dress", assuming those articles of clothing are filled by adult bodies.
Further...
http://www.powerboatlistings.com/view/39455
This listing notes a 25HP motor!!!!!! Holy crap! That, IMO, is a "hold my beer and watch this" moment just waiting to happen.