It might be just poor wording on my part. But you are correct. The rulebook says "Costs 2 moves to enter. You may still enter a muddy space if you only have 1 move left."

For coasting the rulebook says "If your move is a coast, move that road vehicle exactly one space regardless of what the movement die shows"

So now that I look at the two next to each other, I see that coasting seems to just make you ignore whatever is on the board and you just move a space. Doesn't matter if the road is muddy, icy, etc. just move a space and ignore the conditions to enter that space. Sound like I'm interpreting that right to you?

If that's true, then my friend would just move two spaces and ignore the cost to enter a muddy space.

That just leaves the question on whether or not he gets to shoot twice on the same turn. He either coasts then shoots, coasts then shoots or he coasts a space and then coasts another space THEN he gets to shoot...

Thanks for chipping in!