[jorluivil]

Originally Posted by fongman

When a Hobie is cruising above 4 mph, the power produced by the turbo fins forces an excessive amount of water up through the Mirage drive opening. To minimize this, I cut a piece of 1/4" rubber to fit snugly at the end of the drive opening. 2 screws holds it securely to the drive unit. The last picture shows the amount of water in the kayak with the dam in place and peddling about 4.5 mph.

I'll have to assume you're not aware of this but hobie already makes that part for the drives