i have a 1998 25 active thunder w/ hp500 it has a 12" stellings ext box bravo1, running a 26, 4 blade prop. when i get over 1/2
throttle the boat porposes the faster i go the more it porposes.
unless i have the k planes down ,but that slowes you down.
ive been told it may be the ext box. i have talked to many other 25 thunder owners they all say there boats run level but none have a ext box. what can i try
thanks 25 thunder