My boat got stucked in shallow water. First, I saw no water flow through the peehole, then the overheat alarm went off. I then shut off the motor and waited for 10-15 minutes. I started the motor again, there was water flow through the peehole. I then started to head back to dock with 30miles/hr. The water was still flowing fine on the way back, until I was stopped by USCG due to someone attempted to jump off the overhead bridge. USCG detoured us by their direction so I ran the boat in 5 miles/hr. After that, I ran the boat 25-30miles/hr again, but the water started to flow less through the peehole, then stopped flowing at all. However, the motor was still running fine for another 10-15 minutes @25-30miles/hr with NO overheated alarm went off until I got to the dock. I towed the boat home and ran it with garden hose water, there was still NO water flow through the peehole. Though I saw some water bubbles came out from it. What is wrong with the motor? Please advise me what I should do? Many thanks in advance! - Anthony