A sulky is the " cart " a jockey sits on when racing trotters { horses }. They balance the weight much better than the commercial game haulers you can buy through most hunting outlets. Don't be discouraged by the thoughts of cold nights, etc. Just be prepared.

For heat, I converted a mailbox, the type you see attached to top of posts on rural roads, made of sheet metal, to a wood burning stove. Keep your eyes open, and you can find one in good shape for a couple of bucks. Cut a 3" hole in the top, attach a 3" diamater stove pipe w/damper, add a spark arrester and woala!!, a wood burning stove, light as a feather, and will last a couple of years. They heat a 100sq. foot area quickly. Nothing like wood heat to dry out clothes. I place mine on a magazine rack I found, with side sleeves for magazines. I use these side sleezes to put wood in to dry out for the next load going in the stove. The height of the rack keeps the heat from burning the floor. Works like a charm! When choosing wood to burn, stay away from wood laying on the forest floor. Cut dead, standing, beach, maple, oak, if possible. In blow downs, cut the tops sticking in the air that would be above last years snows.

If you want to be serious about that type of hunting { IMHO, the most rewarding, you have to have a lot of McGyver in ya. LOL