I used a shop vac to suck up the down into a contraption that I cobbeled together from pvc singtrainer/drain parts. the loose down in a box and sitting on a electronic kitchen scale...when i had sucked up the desired weight of down.the hose was reconnected to the "blow" side of the vacume. ...and blew the measured down into the channel. sorry but the ccontraption's construction currently escapes me. I'll spend some time tonight to see if i can get more info on it's construction..later tonight. once inside,and sewn shut, I then massaged the channel untill I was happy with the distribution of the down within.....I think the contraptions construction I got from the hammock forums site or a link on there