I have a hydrofoil stabilizer fin that I put on my Force 50 motor, used it once and decided that the loss of top speed wasn't worth the improved stability. I filled in the 4 holes in my cavitation plate with JB Weld because I was afraid the holes would aeriate my prop. I'm thinking about remounting the fin again and wonder if I take it off and leave the 4 1/4"holes open if it will cause problems or do I need to fill them in again?