This is the only device I have found that appears to be fool proof. I did find that the installation was a bit more complicated. If your gas fill has a chain inside to retain the gas cap you will need to access the hose connection from the backside and disconnect it. This will allow insertion of the Vetus safety device to be installed. It would not slip in from the top side fill location. The specific problem was the tube device (supplied with purchase) used to compress the Vetus hangs on the tab of the safety chain. It was a little inconvienient to remove the hose, but when you think of loosing 380 gallons of fuel as the alternative, it was well worth the extra 15 minutes it took.

By Peter from Annapolis, MD on 8/14/2008

This unit was easy to install and it works. Everybody know how expensive fuel is these days- especially if you buy it at the marina (ouch!). Keep your gas where it belongs- in your tank.