Took, the jet out for a spin with a buddy today, and popped a frost plug! Came 1 inch from going under. We managed to find a sandbar to beach on before it went down. We didn't realize what had happened until the balancer started throwing water into the scoop and it started sputtering!
I am glad the lake was rough and we decided to turn around before we got too far out.
Alls well that ends well, I guess. Lesson learned.