Very good if you over-fill the tank
The Hunter 33 has it's diesel fill port in the middle of the cockpit sole, directly above the tank. The single cockpit drain can be blocked so that if there is an over-fill it is completely contained and won't go overboard into the aquatic environment. Diesel itself is easy to mop up from the sole, and although it dries slower than gasoline it DOES evaporate. The other advantage to being directly above the tank is that you can stick the tank directly (I use a piece of 1/2" dowel marked off in quarters) to get an absolute reading on how much fuel you have.When you do the install just make sure you undercut the core in the sole by 1/2" to 3/4" and fill it in with thickened epoxy to eliminate the possibility of the core getting wet. Also, very important, countersink each screw hole slightly through the gelcoat to form a trough for the sealer to form into, and to prevent gelcoat crazing at each hole fron compression sterss from the screws.