Garage floor coating question

[ricer]

I am looking at garage floor coatings and wanted to get your guys thoughts on this. The previous home owner painted the floor with some kinda of paint (i assume garage or concrete type product) Well the stuff is peeling up in places and i want to put down U-coat it or something similar. So my question is does the floor need to be sanded down to remove all the paint, skim coat put down to start fresh, or some kind of acid etch will eat/remove it during the prep.

I am not looking forward to sanding or skim coat, so hopefully the acid etch would suffice.

what would you do, or how would you proceed?