we do not rotate. I think it all comes down to technique, tried it a few times but saw no real difference.
We coat one handed, pretty fast on a table top no support for the screen.
we tend to rock and change the angle of the screen based on the amount of emulsion in the coater. Example full coater the screen is pretty much almost vertical, half full coater maybe a 45 degree angle, end of stroke rock back to vertical to break the coater away.
low volume coater the screen is darn near parallel to the table top, end of stroke rock back to vertical to break the coater away.
I know for a fact I can not coat 2 handed
mooseman