I use blankets and cardboard to protect the head and glass when the head is folded down. The cardboard also helps the pin slide into the vehicle easier. Some people also use pvc pipe to roll pins in (they also make a solid pvc pipe...which is much better...but tougher to find).
I bring a 9/16 and 5/8 wrench, which are good on leg and head screws for about 99.9% of pins. Some people like to bring wd-40 for incredibly rusty bolts that wont unscrew otherwise.
I bring a ziploc bag to put keys and bolts in. Bring cellophane wrap, rachet straps, and rope for securing the game and the hatch down if necessary. Bring a drill with bits in case a lock has to be drilled. I also like to bring a flat head and Phillips head screwdriver in case something (backbox door, coin door, etc) needs to be popped open.
Ask the seller if there are stairs involved and if they can help move it. If there are stairs, bring a dolly. If they can't help you, bring a friend (it is usually a good idea to bring a friend anyway...especially with stairs).
If...and only IF the seller can not help and you can not bring a helper...then bring a hydraulic cart or pin skates. I recommend taking pin skates anyway, however, if you plan on ever getting more than 1 pin (pin skates are far easier).
Remove the head bolts and put the translite/BG back in and lock it. Put a blanket or cardboard down and lay it down gently. Wrap it in cellophane or a rachet strap/rope (make sure to protect it with cardboard or cellophane so it doesn't damage the cab). One person get at each end and carry it to your vehicle with the back end as near to the SUV as possible. Unscrew one of the leg's bolts (putting them in the ziploc bag) and then place that corner on the vehicle, and on the cardboard, to prop it up. Take the other back leg off doing the same thing. Slide the pin in. Take the front legs off doing the exact same.
Some people like to wrap the legs in cellophane and/or rope as well.
Double check that the pin is all the way in, and that the bolts (leg and head) along with the keys are in the ziploc bag. Double check for the manual, all tools, etc are in your vehicle ( I learned this the hard way).
Do the exact reverse when you get it home. Enjoy.