1000 lbs. Capacity Hydraulic Table Cart
http://www.harborfreight.com/1000-lbs-capacity-hydraulic-table-cart-69148.html
$250 No need to modify the cart. Lift from the rear. It jacks high enough to reach a trucks tailgate.
You can also lift from the front but have to make sure the front of the cap doesn't hit the handle brackets, which can scratch the cab. Just load from the back and you dont have to worry about it. People say you cant load this from the front, but that is not true.

lift.jpg

In my case all my pins are on floor sliders. So I just slide the pin out and load it from that point. For me I also have to get the pins out the back and all the way around the house and then into a truck and this works great. The deck for my patio door in the arcade isn't built yet. So I use the jack to lift the pin about tailgate height into the arcade. You can still lift pins from the front with this if you have the head down. Just put some rubber over the handle pivot-bracket if you are worried. When you have it pulled out then just switch to the back when you are ready to push it.

The ATV jacks are way more tippy compared to the 1k jack above. Also the wheels make it over huge cracks in the walkway around the house. I can unload/load a pin from my truck all way way around my house and lift it up into a patio that is several feet off the ground.

The downside. This jack is very heavy, you need a ramp to get it into a truck. So, that will prob be a deal breaker for most.