Replying to Building a permanent BC kicker

Ok, so a few friends and I are seriously thinking about finding a nice area near our ski resort and building a out of bounds BC kicker that we would pretty much build, maintain and session all year. But we want this thing to be sizable, with a large, wide takeoff that will survive the elements and other idiots poaching it. We all have avy shovels, and I even have an ice-cutting saw, which is a nasty looking toothed blade thats about 3 feet long. So I think we can build it - however some tips on how to do one would be nice.

Whats the best method for making a solid kicker? I know that most booters I see in ski movies are made from rectangular "igloo block" pieces. Is it just as simple as cutting a bunch of those? Any good ideas/help from people that have tried to do this? Is it even worth trying to maintain this thing over the year if we'll use it about once a week? And also, any hints on getting a really good inrun?