I have a Black and Decker "Workmate" which is sort of a portable work table/vise thingee that makes a perfect engine stand. It is about waist high and stable, I just open the vise jaws all the way up, place 2 24" long cuts of 2x4 on it to keep the oil pan up and out of the way and throw a rachet strap lightly around it unless one of my toddlers gets too curious (a 200lb motor falling 3 feet would do some damage). It is a perfect wortking height for me, and with a double layer or cardboard under the whole thing I can push it across the garage without much trouble.