It's a real lot easier if you don't think of it as 3/4 but instead count it as 6/8 (or even as 12/8). The quarters stay the same (ish) but instead of 1&, you count 1-triple, 2-triple, etc.
If you have good drummers, they will generally set up the transition by coming in with heavy triplets switching from 8th to triplets and everything just flows right into it.
Worcester/ Providence area Bass player, looking to hook up and play some tunes!!