I have a 96 20' Proline and would like to install chocks. I have backer plates (2"x4") stainless. The plates are 1/4" thick, I believe the the deck material to be around a 1/4". My plan is to locate chocks slightly to the rear of the cleat on each side. I plan to tape the location starting with a small drill bit and increasing the bit size to avoid splintering. Any suggestion or tips would be appreciated. Thanks in advance.