The crazy Danes at Racegun have been building cockers with
teflon -finish for many, many years. Think they call it Diamond
cote or something like that. Its got a greenish kind of colour
and are very, very slippery. The teflon is actually put into the
surface of the aluminium (almost like anodizing).
It doesnt look as nice as some anodizing finishes but its surely
slippery as hell.