I just purchased a Commercial edition of the Cyclone Rake by Woodland power products. I plan on using it on my Toro Zmaster and also using it on a older Bolens garden tractor.
I bought it with the intent of a using it as a vaccum system while mowing up leaves as well as doubling as a truck loader on other jobs. If you have not seen one, The collector folds down flat, the engine and blower unit detach from the frame, you can hook up a 15 foot 6 inch collection hose, you can hook up a 15 foot 7 inch discharge hose, you can have it collect debris into 6 polymer collectors that fit inside the main collector, the main collector is 32 bushels or 40 cu. ft. or 300 gallons, all conections are quick release latches, it uses a impeller that bends when stiff objects are sucked up.
What really impressed me was that it did not trailer like a Trac-Vac, thus allowing you to back up without jack-knifing. It also looks more stable (will not tip over) than a Trac-Vac. The mower does not have to carry the wieght, just pull it. It diconnects with just two pins and a latch. You can dump the load or suck it up with it's own vaccum and discharge it 15 feet somewhere else or into a truck. Plus the fact that it could be taken apart quickly and fit into the truck without taking up so much room on the trailer as well as storing it for the 11 months of non-use.
Now, I have not used it yet. Still in the boxes in the shop. But, should have it up and going this next week sometime. I do not have their web address or phone number in front of me at this time. I'll post ASAP.