What if a dude is 6' flat? Does he have the option to play in either tourney?
Pretty much, as did everybody for that matter. If you were 5'4" you could play in the 6' over 1 on 1 tourney or league if you wanted to. There really were a lot of guys around 6'1" who played 6 ft and under, it just couldn't be blatantly ridiculous. Had a 6'2" guy on our team 1 year who was ruled "ineligible" due to too much height. MCMWCATS, or something like that.
I know at least 1 year I played in the 6 ft and over 1 on 1 tourney(I'm 5'11") and got a beat by a 6'4" guy who really sucked but he just backed me down everytime and I couldn't stop it. It sucked.