It is not necissary to have legs with this system.
The model #200 lifts 440lbs (200KG) and roll is minimal.
Here are some pretty pictures to look at.
1) Follow the instructions carefully on the lower frame suuports that are required.
If you rear-end someone or hit a solid object without the unit properly and safely mounted, it could slam forward and smash you like a pancake.
2) There are two upper mounting points where you drop two 5/8" bolts through the bed to a point below. Make sure whatever they bolt to is SOLID.
This keeps the frame from flexing and rocking forward or back which would throw things off level. Basiclly you want the unit to be attached SOLIDLY to the truck.
Remember, when you are 16 feet to the front or to the rear of the truck with the cradle lifting acouple hundred pounds or more, this is a LOT OF LEVERAGE on the frame of the unit. Mount it solidly.
On my truck, my bolts drop through the aluminum bed to 3' inverted steel channels that I gusutted to eliminate flex.
3) They have changed the winch from the model that I have so bear that in mind.
Mine came with a 2HP winch (1500 watts) of very high quality.
It runs around 120 amps.
BUT, every time you start the winch the in-rush bursts to over 300 amps momentarily!!
I mounted two HUGE schoolbus batteries in enclosures.
Do not use deep cycle batteries. This is the totally wrong application for deep cycle.
You need regular batteries of high capacity that can punch out big amps to reduce heat.
If I think of it I will try to get the numbers off of my batteries, bu I can tell you that they are twice the size of the batteris in my truck.
With these, I can fully load or unload without starting the truck.
Make sure to Isolate the boom batteries so that you can start your truck in the event of???? Also if you leave your lights on in your truck or somthing and accidently run the truck batteries down, it is nothing to just cross the Isolator with you jumper cables and give yourself a jump from the boom batteries.
4)Although they advertise the ezyloader lifting all kinds of stuff; don't do it.
The winch on mine has 10 times the power that the boom can manage, and you won't realize that until you bend something. Guess how I know about that?
My policy: lift beehives and supers only.
5)Develop a procedure for folding and unfurling the boom and go through the same motions every single time.
Reason? Twice, I have driven off with the boom unfurled, (it was in the locked position, I just didn't fold down.) and almost had a catastrophy.
The first time I heard branches snapping from trees hanging over the road, pulled over and realized I still had the boom vertical. Had I gone another 1000 feet I would have gone under a railroad tressle and wiped the whole thing out.
I'm sure I will think of more....