fjlee,
My wife and I aren't quite as far along as you and yours, but I decided a couple of years ago that after years of using packframes and toboggans wasn�t as good as the old invention known as the wheel�the exception being a toboggan on snow.
Had used a cheap game cart with a wheel on each side for level-ground hunting for a few years, but then found out about an in-line called the Neet-Kart (
www.neetkart.com), originally developed for getting injured humans out of the backcountry where anything else was impractical. Because of the in-line wheels it can not only handle sidehills but go over rocks and logs up to a foot high. Have now used it on game from pronghorns to elk and like it a lot. It�s kinda pricey but in our experience well worth it.
