Originally Posted by captnjack
And drain it underway while reusing the filter.
Exactly. Detection and action.
I was on a dive trip out of Xcalak MX a couple of years ago; one of the day trips involved a 2.5 hr run out to the outlying islands on San Francisco reef. We were on a hard boat running a pair of Yam 200's; ended up having to stop every half hour to drain the bowls on the fuel filters (the operators blamed it on the fuel distributor, but since they stored gas in 55 gallon drums in the yard of the dive shop, well... At least the guys held the drainage in plastic water bottles for disposal.
Wasn't really the greatest of my worries, as, while underway, I could watch the transom flex by at least a couple of inches. I spent most of the time wondering how long we'd be adrift if both motors ended up at the bottom of the ocean.