a month ago i would have said not nescessary, but....our movers were nice enough to offer to stop the clock on our move and do a side job of packing/unpacking the private truck we had. they had filled their truck to the brim and saw how much we had left (not enuf to justify them coming back with their mega truck for a second run but a significant amount). said they would stop the clock, do the work and we could compensate as we saw fit (i should note this offer was made after we told them not to worry about lunch and got a big pizza, soda and brownie delivery made to the house where we had chairs in the shade for them to sit on).
the time they spent on the regular part of the move came in at 2 hours less than had been bid-so they got tipped the difference-$300 split between the 3 of them. it was a godsend to not have to pack and unload the second truck ourselves. i think they were pretty shocked-but they deserved it, they were lifesavers.
p.s. congrats on getting out of crazy northern california-did you plan this heat wave as your swan song (108 degress-realy!) best of luck in your new home (which one did you finaly pick out? do you have a photo you can post before you leave?)