I have also done the same in the past for starters it is not considered commerical unless you are accpecting money for it and even if you are be given funds all you have to say is your buddy allowed you to borrow the rig there for no issues at hand as far as your ins. I agree there is always a risk factor at hand but I would also run it by your agent but back to the other stake at hand what the state does not know won't hurt them or you it's not commerical either way there ways around it to avoid it regardless your not required to weigh in so don't sweat it do the move and just be careful also depends on far he wants it to go and where take all into fact how big is his rig and what do you have to move it with...
The Williams Family-Northeast, MD 21901
1999 Foretravel U320C-Gray, Black Mix W/ White
41 FT 9"-M11 450 H.P Cummins-1550 Ft Lbs of TQ