Ewan, I doubt Elos would mind me borrowing this from their sponsor forum
Phish's second pic in this thread has another shot. But its his photo so I'll just provide his thread and not the pic.
http://archive.reefcentral.com/forum...readid=1153445
There are definitely tricks of the trade to keep these together w/o bracing - I would ONLY trust a company who has a good track record. Elos and AGE come to mind. I believe the silicone itself and the application are different than another tanks with add'l bracing. They've been around Europe and Asia for a very long time - so its not really new stuff.