Another possible solution--use ponytail holders. Most discount department stores and drugstores carry them. Get the clear ones that are advertised as being nonslip. Put one or two around the bezel--will hold things just fine.
I prefer these over rubber bands or other approaches as they have a bit of texture (to hold hair) and do not slip. Also, since they're clear, they don't show up much.
You can also use these to attach a surefire beamshaper or filter to an Inova T1.
good luck.