I have a Hi-Lift and have used it with my Dixie Chopper a few times. You can lift only so high before you have to put stands under the mower and then lower and reposition the jack to lift higher.
Doable but time consuming.
I found a gantry crane and 2 ton hoist on craigslist fairly cheap. It's multi-purpose so that's what I use now.
I'd really like to keep the hoist on it all the time but I don't know how long it would last out in the weather. Does anyone else have a hoist out in the elements?