They didn't/don't use TAC in BO.
Only VAC operates in BO, so it's way safer then in BO2.
BTW, why wouldn't a perfect nade thrower be a hack? 104-3 can be done w/o hacks, that's true.
I doubt, but some of hacks might work(I'm not sure which is BO MAC version, tho)..Feel free to try them out.
And yea, all hacks are detectable.