Jacques, I don't know that you can buy the bits in hardware stores, I got mine at luremaking.com. You can easily enough make your own by grinding/sawing an appropriately sized channel in an old socket.
For the screws, even the best ones will pull out of softwood if you're after muskies. Best way for soft or hardwood is to predrill a hole just very slightly bigger than what you need for the screw.... shoot a little 2-ton epoxy in there then drop the screw in.Make sure it's facing the right way cause it ain't goin' nowhere after it sets.