Am I correct to assume that you can't move into half hexes?

I know you can delpoy on shared hexes on non edge areas of the map (but not half hexes off the map) on certain scenarios.

Nevermind, found it on page 18 of the rulebook. Read through the whole thing and missed that paragraph.

Actualy I think some of the scenario designers have forgotten about the deploying on shared halfhexes. Many a scenario lets one side set up in ridicilously advantageous positions due to this rule.

Well I was looking at the Tank Hunter scenario, and I was thinking..... you must delpoy in the forest, but what is to keep you from driving up the side of the map.

Deployment can be almost everything. I would guess that on some maps, the winner might be decided by initiative and who has to place first.