What are the best adult softball bats that are not multi walled?

Question

I play in the Huntington beach coed adult softball league and there are a ton of rules that pertain to bats. I need a good bat that's not labeled as having multiple shells, walls, compartments, sleeves, trampolined, matrix-ed, transfer molding, layers, chambers because there not permitted. The bat also needs to be a single piece construction. The only bat my team has is the ultimate weapon and its not getting the job done. Other teams are hitting us like crazy and were tired of getting shelled. please help because i feel at a disadvantage.

Answer 1

Questions about slow pitch softball will not be answered.  

Answer 2

Tough question as most of the quality bats today being made aren't single wall bats anymore, but I'm going to have go with either the 2009 DeMarini White Steel, or the Anderson 2008 PyroTech Slow Pitch Softball Bat.  Hope this helps you.