This is my first boat. It a 1989 Four Winns 180 Horizon w/ 4.3 OMC Cobra. My question is last season the boat had a hard time to get on plane when towing two tubes. It turns out the engine had alot of proplems and the prop pitch was to high (14 x 19) so i rebuilt the engine and got the right prop (15 x 15) and the engine has more low end but still wont plane easily if everyone is in the back of the boat. i have to make some people sit up front get it on plane faster. My guess i just want to know if this is normal and at what speed should it be on plane? Also where should the trim be set at? Do you have to have the weight in the boat distributer evenly to get on plane? thanks