The sled is the answer.. I use my ice fishing sled.. Holes drilled 4'' apart on the top lip for bungee cords to hold them in.. I live in the prairies where we have deep coulees.. We built a pulley on a chain that wraps around a fence post or tree ifin you can find one.. 300yrds of rope.. Tie on truck drive the fence line it'll come.. If you follow the yellow rope you might be able to see a young fella down there..
Thanks Leroy