The basic principle behind "Block" wrestling is fantastic...
After everyone weighs in you determine how many wrestlers you want to "Block" together (Example 5 wrestlers), you set TW to start at the lightest kid within an age group and then bracket the first 5 wrestlers (example)together then start the next bracket...The only issue that I believe may exist is the experience level of the wrestlers (A,B,C,D)
I have only been to one "Block" tournament but I think it is great!!!
I think the "Scramble" format is the best format for both competition and mat time... if people are willing to combine some weights to get the best of the best (Within Reason) wrestling each other...
I know at one tournament we took 4-AAA wrestlers from one weight and 4-AAA wrestlers from the next weight up and placed them into a scramble... Each wrestler had 5 matches against very, very good competition... We then took the rest of the kids (All C/D wrestlers) and placed them into their own "Scramble" bracket.
Just my thoughts... Just remember there is more than one way to skin a cat... My preference is to give each wrestler the highest number of matches, against the most reasonable competition, in the least ammount of time!!!