I'll try the metal ones then. I hate sewing buttons by hand though. I do have a button foot for my machine, but I want to be really careful when trying to sew a metal object.
So, with these things, there's no need for any holes through the tarp, except for the thread holes?
Just got my newest shipment from Quest. 3 layer WPB for my bivy, replacement cordura for the straps I screwed to hell on this G4 bag, and some extra to make some larger waist belt pads.
Figure I'll make a first run on the Meteor bivy with this cheap chocolate stuff I bought for the bottom, and the cheap ripstop I got for the top. Then, if its too claustrophic, I'll nudge things a bit wider when I use the expensive spread.