I'm going a little off topic here, but it might prove interesting nevertheless. While I agree with previous posters that stealing fuel from a boat docked at a marina is difficult, it is not impossible, especially by kids looking for a few gallons or more for their outboards. We can expect the price of both gas and diesel to dramatically escalate by the late spring/early summer. It is already happening with our cars at the gas pumps. Drastic times call for drastic measures so beware! My late Dad owned a very large automotive facility in Larchmont NY. We also were dealers for Texaco gasoline/diesel. During the second gas shortage of the 1970s, we discovered that we were losing about 50 gallons of fuel every night. We finally discovered that every night after we closed, a van would pull up over one of the fuel fills for our underground storage tanks. The van had a section of its floorboard cut out. Someone would reach down through the cutout, unscrew the underground fill cover, and lower a long hose into one of our tanks while they were inside of the van and thus not being seen by anybody. The hose was connected to an electric fuel pump that when switched on, would siphon out fuel at a fairly quick rate. The thieves had multiple 5 gallon gas can in the van. They robbed us every night until they were caught. Getting back to boating, marinas, depending where they are and how they are managed, may or may not be vulnerable to scenarios like I described. My last boat held 600 gallons of diesel in two tanks. I probably would not know if someone stole fuel from me, especially that there was no fuel gauge but only sight gauges by each tank. My Ranger R-31 holds 180 gallons of diesel. Should I check my fuel readings ever time I board her even though my marina is very safe and well protected? It will be interesting to see how this all plays out as the price of fuel goes up!