I use the Cyclone Rake. It attaches to the 3PH via two pins and a custom 3PH bracket. It rides on two casters and the 3PH. The two pin arrangement makes a rigid connection which means theres no pivot point like there is with a tow behind trailer, this makes it real easy to backup and manuver around obstacles.
It picks up everything I run over. Instead of running off of the PTO, it has it's own 6hp B&S engine. Unfortunatlely this makes it very loud, ear protection is a must.
It also generates alot of dust.
I generally leave the bracket attached to the 3PH which makes it a tool-less and easy connection when I want to use it as I don't vaccum on every mow and since I mow a large area, I side discharge into a few large windrows then go back over them with the CR, especially if I let it go to long between mowings. Works out pretty good for me. Theres 3 sizes of the CR.
DR makes a similar model but with a hard plastic hopper and theres two models with a built-in
chipper.
Theres several others, some of which are powered by the tractors PTO.
A side benefit is compost. Last years grass & leaf clippings are this years compost. I don't worry about bins and such nor do I bag. I just pile 'em up and turn it once a week or so w/the FEL. Makes good rich compost /forums/images/graemlins/grin.gif
Both CR & DR will send you a free VHS tape extolling their product, just go to their websites and request one.
Good luck
Volfandt