Our church property in NJ had one of these to handle the leaves on about 5 acres with LOTS of oak trees. Used Sears tractors, cart, blower, etc. AWFUL noisey rig. When I took over the mowing chores, I dumped all that stuff, bought a Scag ZTR mower and chopped up the leaves with it. Just discharge the leaves to the inside of ever-increasing rounds until the engine starts going chunk-chunk. Then turn around and discharge them the other way. Worked fine.
If the Scag was a mulching mower, it would have worked without doing the chunk-chunk stuff, as this is what I used in La with leaves falling 6 months out of the year: a mulching mower.
You're losing a lot of nature's fertilization for the grass by not mulching those leaves right in place. If it lowers the pH (rare), lime is cheap.
I vote to tow it out onto a frozen pond like the one poster said. Use it for ice fishing.
Ralph