These should be dimpled for a #10 screw, not a #8.
They sometimes have you drill nylon blocks for #10 drill size when using #10 3/16") screws, but normally #12 drill is the upper limit for a 3/16" bolt/screw. I normally drill with a #13 then ream to 3/16".
Given where you are from, I'd say to h#!! with it and go skiing.
Tom.