Without using hooks or being supplied? I'd like to hear this!
Share what, I'm a play-by-ear kinda guy, I just build whatever the game required and don't go for specific tactics.
I do have a friend with the following tactic (2v2's and 3v3's)
Cutter:
4 supply pads and upgrade as quickly as you can as you go!
reactor
supply pad & 3 spartans (get veterancy on them asap)
rebuild of the supply pads as field armoury and get the time-reducing upgrade by upgrading your reactor to lvl 2.
Rebuild supply pad as a vehicle depot and pump out endless tanks until max ensuring the high-veterancy spartans are in them. Use the first 3 spartan tanks for scout them and gain veterancy of their leader, bases and vehicle-training-buildings.
This is a FAB technique to play alongside.
Please, do share