Hi Joe,
She looks pretty strong in the picture

but when you're camping, you're supposed to relax, not get a good workout!
There are days that I open, and close the hatch 8-10 times a day...kind of like a kid looking in the fridge for something to eat...
Here is a link to a discussion that has some of Andrew's drawings.
http://tnttt.com/viewtopic.php?t=2405
Hopefully Andrew, or someone else with greater skill than I can help you with the layout (you really need to do that part anyway, even for basic non assist arms)
Once that part is done, just install the lifts and you're finished!
Rob
Waiting for "someday" will leave you on your deathbed wondering why you didn't just rearrange your priorities and enjoy the time you had, instead of waiting for a "better" time to come along...