The roughest coasters I've been on (no particular order):
Boss - It's extremely rough, especially the last helix but I still find it very fun.
Racer (KI) - I did not enjoy riding this at all. Every time we went down a drop, it felt like the train was hitting concrete.
Hades - One of my favorite wooden coasters and one of the most aggressive ones at that. Very painful but the tunnel is pure fun.
Zeus - Ouch. I leaned forward and the back of the seat still kept hitting my back which left bruises.
Mean Streak - It didn't shake me side to side so much as it was just very bumpy.
HellCat (Timberfalls) - This little ride is a ton of fun but very rough. Still one of my favorite woodies!
Corkscrew (CP) - Definitely gets your neck on the corkscrews, but that's how most Arrow loopers go.
The Beast - My favorite wooden roller coaster. It's indeed rough, but I absolutely love it!