How do I move a huge pile of shingles into bags effectively.?

I have recently re shingled my roof, but now there is a HUGE pile of old shingles left, and i have to put them into bags. The only way I can think of is to pick them up, one by one, into bags. I can't call a dumpster to pick it up, nor can I use a shovel to scoop them up because of their size. It's becoming an utter nuisance, and it's impossible to put them in bags one by one in one day. I'm kind of a one man team here, but I can get someone else to help me