I handle my deck, snow thrower and plow with a regular vertical handtruck with 10" wheels. For the plow and thrower I store them standing on their nose with the frames up. To move them I slide the shoe of the handtruck under the cutting edge, wrap a HD bungee around the frame of the truck and plow, lean 'er back and off I go.
The mower is a little more complicated. If I don't want to test my "stones" that day I'll roll the deck under the everpresent ratchet hoist in my garage and hoist it chute side up vertically. Then I move the HT under the end lip of the underside and secure it to the HT. I'd sure make one of those frames if I had the room but the deck is against the wall secured with a hook cutting side out. The plow and thrower stand in line in front of the deck for the winter. I can exchange places of the blower and plow in two minutes or less depending on what the "weather man" says.
Another thing that makes deck handling easier is a "hooker". No, not any of Ed's kind but a handle with a hook on the end. Mine happens to be a snow shovel "D" handle with a 4" hollow hook at the end. Drop the deck, and hook the hook under the deck or grab a wheel bracket and pull it out from under the tractor. If you have swivel wheels on the deck you got it a bit easier, it'll follow you easily. If not you can "aim" the deck where you want to go and tow it with the hook. I NEVER bend over if I don't have to!!
If you buy a handtruck that will be used for anything outside, get an air filled tire model in your weight range. They roll way easier over uneven surfaces like gravel, dirt and grass.