The Nissan 6 HP 4 stroke fits the well , can turn 180 degrees , has a vertical pull start feature ,throttle arm folds back , weighs 55lbs. , was under $1500 by a good bit , it is the same as the Mercury or Tohatsu so you can use their service centers too , 3 year warrenty , runs about 3 hrs on a gallon of gas or 10 hrs per tank .
I found itto be the biggest, HP , that will fit in 4 stroke , all the others , 9.9 ,9.8 ,Honda , Merc., Nissan , Yamaha etc., have a cowl fairing that hits the well .
That extra 30% HP is payed for in 150% weight increase too , average 9.9 weighs 130lbs if it is a 4 stroke .