I've always tied a spare piece of line to the jib halyard shackle and the other end to the bridle shackle. Raise the mast (I've never had trouble raising the 16's mast by myself in the 30+ years I've had one.) Hold the mast up with one hand and take the slack out of the jib halyard with the other. Once it's secured, climb down and hook up the forestay.

Alternatively, you could use the main halyard. That's what I did with the 17, except that I would attach it to one of the bow tangs, since the 17's forestay / bridle is taken apart at the bow tangs. You could get enough tension in the halyard to hold the mast up, even though only one of the bridles was connected.

The absolute best way to do it, though, is to enlist an innocent bystander to help. You never know - they may want to go for a sail