I am half way thru building a cart right now. I decided not to buy one because i am going to hide in the woods and it is going to get rusty and such during the season and possibly stolen.

Not sure if you have access to torches and a welder.

I actually started with a cheaper dolly someone threw out. Also scrounded up a lengthof thinner wall pipe. Right now just looking for some 16 or 20 bike wheels and then figure out if the axle needs work.

It will come apart. I will leave a couple wrenches in a baggy and if i get a deer that is farther away it is ready for use.

On the Net I came across one somebody put together using a folding wheelchair.

Not sure if this helps.