We're dealing with this on Lake Anna in VA. I'm mixed on my feelings. On Lake Anna they want 200ft (600 is RIDICULOUS!) and cite the same reasons. Current law is 100 (or 150, can't remember), but I've never seen them enforce it. I'd like to see them enforce the current laws first, then look to extend if erosion or other issues are still happening.
We're on both sides of the argument, we surf, but we also have a house on the lake with a boat house and little beach for my 2 year old daughter all within a no wake zone. Some people in our cove like to surf and buzz the no wake line staying on the legal side, but it's still a MASSIVE wave when it gets to her that would easily pick her up and slam her against the retaining wall or rip-rap. So needless to say, we don't let her play in an area that we built for her to play in. In this situation I'd love to see the surf boat get ticketed, I'd also like to see better driver awareness and responsibility.
An unpopular opinion for this site is that we're doing this to ourselves. We're trying to make bigger and better waves to surf. Bigger boats that hold more ballast, more water, with better systems to make even bigger waves, but we're not thinking about the repercussions. The damage to shore lines, other boats, and God forbid a little kid gets killed because of our our scenario above. There will be a breaking point, and we're starting to see it now.