Kiawah seems the worst for ball-losing - the 17th and 13th obviously, also, if you get greedy, the 2nd, the 3rd and I think it is the 4th (the tough par 4 with the marsh cutting through the end of the drive zone).
At St. A's, the burn on the 1st hole takes a lot of balls. The shrubbery at St. A's is pretty hungry for balls as well (the 4th and the 13th), also easy to lose balls out-of-bounds, for example on the 13th and 14th (playing out to the other fairway on the left) and just past the green on the Road Hole. On the 16th there is out of bounds in the road to the right, and I once lost a ball out of bounds putting on the 16th green!