If your gun has a seperate safety that is in good condition then I don't see any problem carrying it with the hammer cocked. Like said earlier, you should take the cap off when climbing up or down from a stand ( or going over a fence ). With virtually all modern guns you carry them with the hammer cocked and the safety on ( you just can't see the hammer ). When carrying a Colt style semi auto pistol it is called cocked and locked. Just make sure the safety really is safe.