Stan you don't need those additional brackets for using whilst driving, once it's all plumbed in it is very solid.
Cool (well not cool litterally!) thanks for the link. That was my idea just use propex for initial warm up but have something like that rad for over night on very low setting.
Excellent I did wonder why ? They look a bit flimsy for what they are? Thats a bit of money saved towards a bigger gas bottle ;-)