I use them for 3 years.
The foot fits over the lower attachment, which is reduced length when stored, there are 2 heights to use (and slurred 0.90 1.20 m) ...
I mobile-tech series "eco", no winch, fold up to 1.70 m, 1.50 m above the bottom roll 2.50 m.
Good design of the machine, good quality, € 260 TTC piece (retail price at the store in 2003).
It's been one month that I use 2 alt300 with 6 meters of aluminum triangular structure sx292 and it throws.
Very easy to use, they take up little space either stored or installed which I think is important with a weight of 13 pounds / feet (with the entire structure is 59 kgs).
These are my first foot hoist and it's been awhile that I wanted and it's still a must.
The value for money is good because it amounts to 3 meters.
I hesitated but with ALT 400 + is 2 times more expensive and cumbersome and I do not regret that choice at all.
I use this foot for 4 years now with my own structure (6 m) but when I make more tonight I'm a bridge of 10 m and frankly that's enough. I recently shot two in the room (at the bottom together) and I put on 2 BY 4 ramps, 4 lyres Futurelight PHS 200, effects and feet 3 m. It was (normal is ASD).
Photos of www.plaudio.be (evening of March 10)