Re: I?m a Bad Bad Boat Owner
Perfectly understandable lapse and now you've had a pretty good memory jogger that really hasn't cost you all that much. The fact it has been eating at you shows you're a good dad and boater looking to do better next time.
The tattoo sounds a little extreme

but if you have one of those little label makers, why not print a strip that says "PFDs" and stick it to your console next to your ignition or blower swtch? A mini-checklist as it were.
Myself I have an old tractor with one of those glass bowls to catch sediment in the fuel. It's mounted up under the gas tank on the side of the engine and out of sight. If I forget to shut that valve after using the tractor, the gravity feed will eventually flood the carb. Happened all the time til I printed a strip that says Fuel Shutoff and stuck it next to the ignition switch as a reminder to do first thing after climbing off the seat.
I need another on the boat reminding me to flip up the swim platform ladder. I'm always taking off after boarding a tuber only to look back and see this fountain of spray going everywere. Arrrrgh! Probably isn't all that good for the ladder either...