DJ - The Bull Trout CG area has three sections - One right on Bull Trout Lake and you are right - these are tight spots. I've seen Class A's backed into some of them but we would not do it. Then there's the Martin Lake section - two loops and one is a group area. The Martin Lake Loop has plenty of wide long spots with plenty of backing room. We went ahead and reserved 31 because it's a double site, 65' long, fits up to 16 persons and 4 vehicles. The side that it's on has a wide entry road as opposed to 19 that is narrower with more trees. The site we always stayed at was 27 that was pretty much a straight back in from the road.
Thanks for the comments though.