That would be great to see first-hand. Do they come back to the same lek each year or does it take awhile to find them every year? I've heard of this myth called retirement or semi-retirement, if it exists watching those birds would be a great experience.
It's definitely lekking season. I got a FB memory today of a crappy video I took of Attwaters Prarie chickens lekking about five years ago. Sadly, those birds are on the brink of extinction.