Trouble with 4 strokes, I understand, is that you cannot just lie them
down any old how - the crankcase oil runs away. I've got a 5hp Tohatsu
with integral tank and it is great powering a small air bed Tohatsu
inflatable. Light enough to easily lift or carry out of forepeak -
takes less than 2 mins to launch dinghy, get engine and leave!! Starts
first time, even when not touched for over a year. No fumes from
stowed motor when tank fully shut down and it hangs on forepeak bracket.