When I moved my 12,000 lb Mazak on the roll back it went really well.
Loading it on with forklift was easy, and also strapping it down.
We put some scrap OSB between machine and bed.
Winching it off was easy. When we got it over the edge of the roll back, we set the leading edge on two skates, and carried on winching, onto a second set of skates.
Then rollback can go back for 2nd machine while you're setting first.
If you have nothing to anchor winch in the building, attach winches to edge of roll back bed, then just go around the machine.
We used a chain type "cum-along".
Myself, a good buddy and the rollback driver got my mill in.
If the riggers don't want to do it, don't worry. Just get them to bring machine to hard pavement near your shop and take it yourself from there.
All you need is some skates, "cum-along", straps and some chain.
Then a $75 toe jack to get the skates out. Would save a few dollars I imagine.
Took us about 2 hours to get it in off the roll-back.
Good luck.
Bob
12K lb machine is more than most tow companies will haul on their single axle rollbacks. For good reason too. It's more than the trucks can handle even if the hydraulics will do it. Landoll will do it no matter what. Load angle is real easy, much less than a rollback.
I don't slide good machines on the deck. I put them on skates. Tons of work to get all the adjusters backed up into the casting and sliding is very slow going and jerky.