I've never used the Sea to Summit bags for hunting, however after reading the post I'm planning on using them. I use the Sea to Summit dry bags for kayaking. I've forgotten a paddle jacket in the storage area behind the seat on my Wilderness Systems kayak for weeks. Usually there is some water stuck in the storage compartment and the bagged jacket will sit in 1-2 inches of water sometimes, I never had one of these bags leak on me. Also have used the vacuum bags for blankets and heavy clothing in my camper, it makes for tighter packing, the vacuum has never leaked out over years, and I buy the inexpensive WalMart brands.