UPDATE: I harvested 8 adult geese (saving 4 of the pilgrim's for breeding stock). By harvesting down only (none of the fine feathers) they almost filled a 55 gallon trash can. I didn't realize I could also use the fine feathers until I was almost done with harvesting.
All in all, it is certainly more than enough for some pillows and even a small throw blanket. We will probably save it until next year and use it for a fuller size comforter. I had heard some reports online that it takes 75 geese to make a queen size comforter. I can at least now attest to the inaccuracy of that rumor! LOL From what I'm seeing with these 8, looks like 24ish geese would be about right.
As for live plucking, I have to admit I tried it on the four remaining geese but didn't have the heart to go through with it. Perhaps it was the fact I just slaughtered 8 of their friends/family and felt guilt. Also, winter is coming on soon so it seems inadvisable. Plus I haven't made up my mind on the cruelty issue (not saying it is cruel, but I want to be sure about it before I would do it). But for those new to geese who want to try it, under their wings is the best place. It is pure down with no outer feathers to mess with.