Had a friend make me one back when I had an adventure...sold it with the bike when it went. Worked great, was bomb proof and basically had the same curved shape as the stock one with better side protection. Cost about $400 to have a friend fabricate it on short notice...costly compared to what was out there but at the time 2005...there were not many options.
My intuition nearly makes up for my lack of good judgement.
Just installed my new trolling motor
Husaberg tank for sale: HERE