I stumbled upon their website the other day, this looks VERY promising!
I started a thread on easy boat lift removal ideas awhile ago and rigged up my own system with 4 x 25 gallon drums last fall that worked pretty well, but this product looks to check all of my requirement boxes (no need to get wet, no need to pull lift leg pins, etc) has anybody used this system?
check it out – http://www.qualitymarkinc.com/smartejack.html
The only possible issues I can see is that the manufacturer doesn’t list the weight limit for the lift these are used on? and would a vertical lift rub against the mounting bolts for the bottom bar attachment bracket when lowered?