I do the same thing with a little snowplow on my Farmall cub and a 40" sweeper behind my riding lawn mower. I have a "rough" area of a couple acres behind my manicured lawn (about 1 acre) where I dump the sweeper by pulling the rope, never slowing down with the rider. I use the plow to push up a leaf pile back there on the rough. I let that pile rot over the winter, mixing in some wood ash from my woodstove to make a great, neutral-ph compost for the garden in the spring (the ash-base, cancels out the acid from the rotting leaves). That 40" sweeper cost me $20 at a garage sale and it worked great for the last 10 years after I adjusted it properly. The snowplow I made up from junk I found in the weeds behind my dads farm, took about 2 hours to make from free materials. These (2) tools have made leaf collection something I really look forward to each fall. My girls (7 an 8) have a ball in that big pile when I push it up.