I was going about 30 on flat conditions then turned the engine off and on because I had to talk to someone. When I turned it on it was stuck between forward and reverse. Also the turning gets stiff when I try to accelerate. Top speed I can go is 4 and if I accelerate more it's 6,7, and u can hear the engine trying very hard. Switching forward and reverse doesn't do anything just keeps you going forward going slowly as I said. When this happen it was in clean saltwater 30+ ft deep. Any ideas what's wrong?