Need to bury one at the Jersey Shore for my sails ,chairs & wind toys. My Hobie 16 is straddled over it. Thought of truck boxes,giant PVC pipes,culvert drains and yes even a coffin! I could make one but I am far to busy with a house restoration. Thank you Sailors.
i like the coffin idea. that way, if someone messes with your boat, you have a place for the body.
Murrays has them (sometimes) at http://www.murrays.com Hobie also has them available. In my opinion they are all quite overpriced. I went with a $80 Northern Tools truck box and a $25 piece of 10" green corrogated PVC - works great but it did take some time to install / build everything.
Murrays no longer offers sailboxes--I recently checked. I'm also trying to get or make a sail tube or box. Check my prior post for some other ideas.
Eric