Well I got the word from the Director of the league and here it is...
[SIZE=10pt]He wants new bats to have five approvals: ASA, USSSA, NSA, ISF and ISA. He has agreed that in-use bats (those that were purchased before this year) with ASA approval can be used. It is hard to find bats with all five approvals, but they are out there. Some examples are: Louisville Slugger Z-4000 composite ($299.99), both balanced and end-loaded; Louisville Slugger Vapor single-walled aluminum ($79.99); Easton SP14S500 single-walled aluminum ($66); 2014 Demarini Ultimate Weapon WTDXUWE-14 single-walled aluminum ($119.99).[/SIZE]
[SIZE=10pt]The bats you can't use are bats designated for senior play and not approved by any of the five certification agencies. The most popular are the Miken Ultra II both balanced (which I have) and end-loaded. Those bats can be used in our league for players 65+ years old.[/SIZE]