I am around -4 and just deal with it. I hate not being able to see well on the water, but I can see plenty well enough to see the wake and judge my approach. I would quickly lose or break those glasses you linked, and I would never wear anything over my eyes behind the boat as I'd be concerned with eye damage if face planting. I tried contacts but did not like putting in and taking out so gave up, doc said they were fine to wear while doing watersports though, he said worst that happens is you lose one or it rolls up in your eye and is uncomfortable for a few seconds until it goes back in place. I may try again eventually. Once debt free and closer to FI I may do PRK or whatever may be superior at the time. I would not do lasic for watersports as there have been issues with the flap coming loose and tearing. Not worth the risk.