Wow, the endless possibilites....where to begin?
1. Wimpy rod?
2. Dull hooks?
3. Too much stretch with the mono?
Those would be the 3 most common ones....let's have some more info on your gear, like what lb test, reels, rods, the works.
GPS co-ordinates are helpful as well. Maybe it's the Muskies problem, not yours at all. Let me know where you're finding these elusive fish & I'll go have a chat with 'em...