I own a 2003 Crownline 202 BR. My past 2 trips to the lake, the engine has quit while running. On both occasions, I had spent numerous hours on the lake, running miles and miles. Both times, once while throttling up and once while idling, the engine simply died. The first time, I sat for approximately 45 minutes before it would recrank and then no issues as I went to trailer up. The next time, I sat for 45 minutes to an hour and ultimately had to get towed in. One mechanic told me that due to the heat (105 heat index both days) that it was possible that the gas was vaporizing and this caused the problem. Is this feasible? Are there any other possible issues?