Phill- <br>Haven't gone "down this road" on my boats yet except with Prindle rudder castings and they seemed to hold up fine w/ just waxing but castings are different than extrusions. You might check with automotive buffs as aluminum wheels, etc. are often highly polished on cars- From the "factory" they often cover w/ polyurethane paint as I remember to keep "shiny"- <br>Hope this helps! Any pictures of the new Taipan yet?? <br> <br>Kirt<br><br>Kirt Simmons <br>Taipan #159, "A" cat US 48