UKC

I have a Mountain Hardwear tent. One of the little loops that attaches the fly to the pole has fallen off. They appear to have been glued on. Can I repair this myself? If so, with what?

Presumably, with glue. 

Evostick Timebond or Contact adhesive should do the job well.

Depends on what the flysheet is made of/proofed with.

If it's a normal PU membrane, then McNett Seam Grip should be fine: http://www.gooutdoors.co.uk/mcnett-gear-aid-seam-grip-p107601

If it's silicone, then you'll need SilNett: https://www.cotswoldoutdoor.com/p/mcnett-silnet-silicone-seam-sealer-D18721...

I'd have gone with using a staple gun.

Less mess