Actually I did build a storage rack on my H240. The hatch boards fit in the aft fuel locker standing vertically, with the longest one in back. I cut slots in some scrap thick starboard (2"?) to make 2 brackets to hold them upright. You could also use teak. I used a table saw to cut the slots, and the brackets are through bolted to the floor of the locker (access below in battery compartment). I don't have a very good photo but can take some better ones this weekend. They are secure and there is plenty of room in the locker for my 3 gallon gas tank. If you have a 6 gallon tank might not be enough room.