Try some of the 6/8 or 12/8 RTs. A lot of them work great for 3/4 songs, you just have to write the chart differently to adapt.

FWIW, the 12/8 thing has always thrown me. I've been doing sessions in Nashville since the early '80s, and the number of times I've seen a song charted in 12/8 is exactly zero. 6/8 and 3/4, absolutely, but never 12/8. It's probably more common in other genres, but in country/red dirt/bluegrass/etc. it's a real head scratcher.