I'm told our house has five patterns, each a foot longer than the other (starting with 37 feet). I think the total volume is a little different on each. They seem to rotate them, a fact I happen to like. Keeps things interesting.
Yes, I'd consider 45 feet to be outside the bounds of "normal" THS. I bowled at a house a couple of years ago that used 43 feet -- and also happened to have an extreme wall at the 10 board, so it was very wet/dry and whatever oil they used moved all over the place. Pretty tough little shot.
Jess
