Hi Deb
i drove container forklifts and usually do up to 65 hours in a 5 day week, i know it,s a lot and i felt the effects,but i don,t mind.
i have at some stage felt a repeditive strain on my right shoulder as the machines i used have a lot of control functions on the right side like over 20 of them and only a few on the left,it comes with the job.
there are some machines with joystick steering but it would not make any difference to r.s.i.
the spinner makes no dif to me.