Ahhh I see, so you basically used U-clamps with some square tubing very clever
I was looking at somehow incorporating the central tube under the tank somehow as a fixing point without drilling it. Will sit and stare at it again this weekend for a while until inspiration springs to mind.
Thanks this gives me a good starting point and if I don't like the setup can always go down the chopping my double seat later on.
As for princess's my little prince is still young enough to think it is much cooler up front with daddy where it is all happening