I just noticed that Nike now makes a strapless swim goggle. It looks like a swedish-type design that comes with "gaskets" made out of double-sided medical adhesive. You put a new adhesive on each time you use them. The $25 price includes a pack of 20 adhesives and you can get additional 20 packs for $20. I think I might give them a try. Has anyone used them yet?
https://secure5.nexternal.com/shared/StoreFront/default.asp?CS=swimshop&BusType=BtoC&Count1=482372462&Count2=399512887&ProductID=271&Target=products.asp
https://secure5.nexternal.com/shared/StoreFront/default.asp?CS=swimshop&BusType=BtoC&Count1=482372462&Count2=399512887&ProductID=271&Target=products.asp