I just do a quick continuity check with a fluke meter.
Lately I have been using the ILSCO IPC KUP-L-TAP it is a self piercing tap that does not require any stripping of the wire. I was a little hesitant at first because it does not seem like it would make an adequate connection vs stripping the wire and a split bolt. But I have not had any short term problems with them little pricey though about 15 each
