Thanks Tim,

That's pretty much the way I was heading but its good to know it's been done before.

I don't think a bit of bend in the pole will matter.
When sailing a B14 last season I noted that the extendable poles on them used to bend quite a bit in a blow . Didn't seem to cause any problems.

Lots more learning to do <img src="http://www.catsailor.com/forums/images/graemlins/confused.gif" alt="" /> before fitting the "turbo-charger" but I'll start collecting the bits and pieces required and probably treat myself to a kite from Santa.

Thanks for the advice.