Holster needed for hunting

Here's an odd request for y'all. I need a holster for hunting season, but not the usual kind.

A few of the stands I hunt from (there are 7 on the property) during rifle season are a bit...um...cramped. I always carry a pistol with me, and a couple of times last season I could have made an easy shot (less than 20 yards) that I could not have maneuvered a rifle into position for.

I want to strap my pistol to the inside of my calf while **in the stand only.** This would make access quick and easy, while also keeping it away from scraping on anything and spooking the critters.

How would I go about adapting an existing holster? Would a drop-leg holster work? Could it be altered so that something like an old-time sock garter setup could attach the top of it to my calf below the knee, and a strap of some sort at the muzzle end of the holster tie around my ankle?

Or is there something out there that I haven't seen that's already made for this?

Thanks!

Thanks for all the replies! That's why I come here - ideas that I didn't think of. I like the chest rig idea, but the shoulder holster isn't quite what I'm looking for - unless it doesn't get in the way of properly seating a rifle for a shot.

Once again, thanks for the suggestions. It looks like the chest rig wins. Now, off to find one!