Here is how i do it to make sure that water doesnt leak in: put your goggles on your eyes with the straps hanging down towards ur chin, if they will stay without havin any holes, the goggles are right 4 u (this is called suction), if they fall off or...
I used to have this problem too. What I did was get a new strap first, one of those bungee cord looking ones. It helped, but didn't stop the problem. I have used with every pair of goggles since then. Next I made sure there was a good seal each time ...
there seems to be plenty of GREAT goggles out on the market. check out the link below to view all goggles that are best for you. the number one goggle is Dragon.