twin 2006 F150's.. what props to run??

[crazycarl7]

I am in the process of buying a 2006 maycraft 2550 pilot house with 2006 twin F150's. The factory black props were removed and replaced with apollo 15.50 x 17 SS props. the seller actually said the original props ran better. I can feel a lot of prop rattle at low RPM's. The boat shakes. Does anyone have any ideas of what I should do. Should I put the originals back on or get a different set? I dont know what the WOT rpms were. I will check later this week. any help would be appreciated

[boats.net]

I would try the other set of props, the WOT rpm range for those engines are 5000-6000 rpm's. Yamaha Reliance series props work good on the F150 and reduces prop chatter.