I trailer with mine and have the tank in the wing per the plans. I mounted a quick-connect to the fuel line just after leaving the tank. After flight and before disassembly, I disconnected the fuel line from the tank to the engine at the quick-connect and then attach a fuel drain line that runs down to a fuel jug. By the time I get the tail and first wing disassembled, it is usually drained and ready for me to remove the wing with the tank in it. The drain line I use has the same quick-connect fitting, so I can switch between them easily. The quick-connect fittings I use are one of those no-leak connectors than when disconnected, do not allow fluid to flow, so no mess from that.