I bought one of the Harbor Freight 500 lb lift table and love it. The obvious problem is the vertical oriented handle limiting how far under a machine the table can be placed. I normally come at the machine from the side or back when I can to help, and remove the handle as a last resort.
Got some 3/4 inch nipple and 45 degree angle elbow. The elbow screwed into the nipple, and then the nipple really just screwed into the handle mount. I had to grind out the threads to allow the handle to slide into the elbow. I haven't yet, but I'm inclined to grind down the nipple to allow it to just slide into the handle mount, and then drill thru both the handle mount/nipple as well as the handle/elbow and use quick disconnection pins to secure them. This would allow for easy conversion as the vertical handle is actually useful both for moving in tight spaces as well as storage.
The first pic is where the table can be placed with the handle vertical
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