+1 to Harbor Freight for the dolly and winch. Winch was the cheapest remote model available, works well, albeit slow. But, for $50 or less, I'm not really complaining, vs. who knows how much for an RF remote model from another source?
I have the cheapo dolly as well, and I just make sure I've inflated the tires before each use. It seems like it's a little flimsy, in that the fit and finish is poor, and the handle wiggles, but it's not showing any signs of failure yet, and again, I won't cry over the cost if I ever need to replace it.
Something to be said for cheap Chinese knock-offs, indeed
