You don't need to cut that many holes. Why spend the extra cash and risk leaks? It's not a bad idea if you plan on doing big loads of chicken though.
You can see I have two , one with a ball valve to adjust tempsand the other running wide open with a stainless nipple. They are placed one third the way around the drum with one space left in case I needed to add a third.
Slappin that bass like some delerious funky preist!!!
UDS, Half Pint (Mini UDS), Weber, ProQ 20, Kegrilla
*250 gallon cooker- 'The Meat Beast!!'*
British BBQ Championships
Grand Champion 2008
British BBQ Society - Southern Championship
Grand Champions 2009