SGII campaigns

I am looking for information on running a Stargrunt II campaign. The rule book
has good suggestions on replacements, experience, etc., but I am having some
difficulty in coming up with a map system I like.

The only idea I currently have is to pull out my Charley Company rules and use
that system. I'm wondering what other ideas there are

Have any of you run a SGII campaign with a wonderful map system you would like
to share?