2007 200 Optimax (on a P2 but don't think that matters). Fished last Friday, Saturday and a Tx on Sunday. No issues at all on Friday, Saturday morning dumped the boat in, started the motor, put down the poles and parked the truck (so it was idling a good 4-5 mins till I got back). Area by ramp is shallow so I had to idle out maybe 200 yards to get out of the no wake so I feel it was plenty warmed up. Took off and ran maybe 1/4 mile in calm water when the motor just shut down, no noises, no alarm...nothing. I wasn't even running hard maybe 45 mph. First think I thought of way maybe my kill switch got killed but it didn't. Trimmed up to check prop/lower unit and everything was fine. Motor fired right back up, I checked the temp of the water coming out of the pisser and it was just regular warm, not hot (I don't have a temp gauge unfortunately) I ran the rest of the day and Sunday with no issues. I was a little nervous so I didn't even run WOT the rest of the weekend.
The motor has a newer compressor and fuel rails (2014) and a new lower unit (2015). Haven't had a problem with it this year at all. Was properly put away for the winter, new plugs this year (and every year) and I I fill up with ethanol free 75% of the time (whenever I can get it). Marine Stabil and Ring Free in every tank.
I hate having something like this happen and not know what it is.