Stun batons work great for me.
I used cattle prods at first, but but never loved them because slow and unwieldy. At some point I noticed the baton's damage bonus, checked my gal's stats, and gave it a try. I get three dings out of them in the time it takes to prod someone once -- this certainly helped. Next thing I noticed was that it trains not only melee, but reactions as well. Suddenly all my gals had 100+ reactions.
It's a "don't leave home without it" item and I successfully use it on everyone not wearing power armor: academy medics and engineers, guild engineers, church priests and matrons. Even lobstermen! It's one-handed and small and often good enough. By the time I could have a lasso ready, the baton has already done the job and is back in the holster.
However, lately I run into opponents where the baton is no longer enough. I had high hopes for the poisoned dagger: "Stun damage modifier: 100%" it says. I thought it would do a lot of stun on top of the HP damage, but that doesn't seem to be what's happening. I had my second encounter with MERCs the other day and it typically took some 3-5 stabs of the poisoned dagger to put them down. Most of the time, the final blow was also fatal. So I guess the poisoned dagger is much less stunning than I thought it would be. Looking around for alternatives, I don't see any. What to do?