What exactly do you take with you (you suggested 15 lbs. of stuff was a probable amount; what all does that include?)? And, final question -- this time-- who makes the Mac Daddy bugle?
I don't remember who makes the Mac Daddy . by FAR the easiest bugle I've ever used though. Get one, you can cow call, squeal and grunt with it all in one.
If you are just day hunting, from camp, truck etc, what are you going to carry with you ?
knife
game bags
cow call
bugle
water bottle
food
fire starter
rain gear
you'll have a shirt or two because in the morning it'll be cool, you'll walk, get hot, shed clothes, stop, get cool, add clothes etc
camera
film / batteries
flashlight ( I prefer a Petzl headlamp )
game saw ( Wymoing game saw is a must IMO )
maps
parachute cord or similar stuff
everybody takes different stuff. Come people carry compass, GPS's even phones. You need to figure out what your daily essentials will be, because that will in large dictate what your day pack will be. I use aday pack that has shoulder straps and a waist strap
after day #1 you'll likely decide to dump 5 pounds of stuff rom your daypack. its easy to take along too much stuff, thats why doing it before the hunt is so important