Built one of these last weekend and it work a treat, bike is very stable, a;though it did cost me $40 all up, probably chea[er if you have some of the parts lying around.

http://www.nightrider.com/biketech/bikelift.htm

I would go one step further and add a tie down on each side to eliminate any chance of it falling sideways.

Wow Ando,

Now thats one heavy duty bike lift. You could lift a truck with that

Looks stable as.

Damn, just sold my bike jack today......fark!!.