Replying to Any way to get urban speed for free.

I got pretty sweet shot lined up, their is a bluff at Park that would make for a perfect landing. It looks straight out to downtown Cleveland in the east so a sunrise shoot would look tgr/ level 1 caliber. Only issue is the run-up is flat and my budget is $0. I can get plenty of free wood so I thought maybe building some rollers and pumping them like a mtb and skating as hard as you could might work. Has anyone tried this? Is there any way to get speed for a 4 to 6 kicker for pretty much no cash?