Dave, will you be using the kite in strong winds? Will you be using it a lot?
If the answers to both those questions is yes, then go with the heavier
material. But if you plan to use it while cruising to avoid having to turn the
engine on in light winds, then go for the .75.
My use is in lighter
Per my questions a few days back, I've gotten some quotes on asymmetrical
spinnakers for Windstar- quite a difference between standard and made to
order. 'Standard' seems to involve 1.5 oz cloth (at i spinnakers and rolly
tasker) and MTO, recommended in my case at .75 oz. I have never owne