The hose clamp (worm clamp) should work just fine. However, a slightly more "elegant" fix would be to find some steel zip ties, which work perfectly and aren't quite as obtrusive.
Yep, to wrap it, just have a bucket of water nearby to dunk the wrap in. I highly suggest getting someone to help -- you CAN do it by yourself, but it's a lot easier with another pair of hands to keep it good and tight.
When you're done, make sure to spray it down with the high-temp sealer. Do not make the mistake I've made. :P
--Jaeger
