Using Seacast or similar with 5in" Tarnsom Increase

[martin]

Check out my post on the 20..

[Rybones]

Good advice, thanks Martin. I have seen waxed tubing used to hold the thru-hulls open during pourin and cure. They are tapped on every often so they sont get stuck as it sets up. But I will have to drill into it for the engine mount holes because I am extending up 6". I'll check out your post.