Poser
WKR
I do a lot of weighted pack training and increase the weight as it gets closer to the hunting season. Check out the ONUS Training bags at ONUS Training. They are leak-proof, made to go in your hunting pack, and easy to adjust the weight as needed. The intent is to train with your existing pack and not have to use random objects or leaking bags of sandn that are hard on our packs. They have a max of 100lb bag and a smaller max of 50lbs.
Also check out iHuntFit | Building Better Hunters | Hunt Prepared and their YouTube channel. They are very professional and can customize a workout and meal plan for you that'll cater your specific hunting goals.
3rd such duplicate post. Spam much?