Do you leave your platter spinning while switching

YES........ I leave my platter spinning when I turn over an LP or put on a new LP. No magical manual dexterity,.. just simple care and an easy touch.

I use a TW deck too, the Raven one and leave it spinning. I don't use a clamp. I tried a Shun Mook weight and could'nt detect much difference. That being the case, it is easy to take a disc off a spinning platter and I agree that constant turning on and off, would logically seem to add stress to the motor and controller.

no, i use a TTWeights outer ring weight. The platter must be stopped.

I never turn off the TT when changing LP's.

I also never shut off my belt driven turntable. It runs 24/7 and my theory is that it won't develop a spot on the belt if left in the off position for a day or two.

When I used to shut off the TT, I had a chance to removed the belt after about two weeks of non-use and I found the part of the belt that wrapped around the drive pulley developed an "image" of the drive pulley on the radius of the belt.

I must turn off. I have a Basis with vacuum.