When ever we did a hand raising at Fox Maple school, Steve figured the weight of the frame pieces. All of them, in the bent, post, braces, and tie for example.
Now we're not lifting the entire bent off the ground, only pivoting it up. So he figured that 2/3's of the weight was going to be at the post foot to the ground.
So a 1500 lbs bent would only need 500 lbs of lift.

He figured that the average person could easily lift 50 lbs. So 500 divided by 50 = 10 people to lift the bent.

When we do a hand raising we have a safety rope going back to hold it bent from going over too far, as well as one to pull to help put it up. I think last time we had about three people on each line. I'd have to check the pictures to make sure, but that's what I remember.

Glad it went well for you.

Jim Rogers