With reference to your origonal question, yes I regularly experience rotor but only in my spare time!
At work it is unusual to encounter it as by the time we are close to the hills we are too high for 'proper' rotor (with the possible exeption of LBA!).
I am also a glider pilot and have encountered some pretty exciting conditions both in the glider, and flying the tug.
The worst rotor is experienced at airfields under or close to the primary wave. The steeper the downslope of the hill generating the wave, the worst it seems to be. Usually a roll cloud will mark its position, but if the air is dry, then a bit of local knowledge comes in handy.
It's unusual to find rotor much above the crest of the hill unless the lower unstable layer is deep when it can extend higher.
These days most people know when it is safe to fly, but sometimes a glider is thrown so far out of position behind the tug, that the only choice is to release. If you can hang on the strength of the wave above can be spectacular. I have experienced 2500 fpm at over 20000' in Scotland. The UK altitude record is over 38000' and I have also seen a tug aircraft at 5000', engine off and going up!
One word of caution; if you see 2 windsocks on the same field that are horizontal and pointing 180 degrees apart, then there is probably something pretty nasty going on above you. The solution is to forget it and open the bar!