This method is best used in open water and on clean bottoms. It makes hooking the fish easier since there is nothing between the hook point and the fish. If fishing very light line this can make a big differentc but you can not fish jig head worms rigged this way around wood cover without getting hung up a lot.
To rig your jig head worm with the hook exposed, thread the end of the worm down down the shaft of the hook until the bend of the hook comes out of the worm at the right spot so the worm is not bent. This helps lower line twist while fishing a jig head worm. Some fishermen bite 1/8 inch of the head of the worm off to make it flat so it will fit against the jig head better.
Exposed Hook Two - Whacky Style
Rigging your worm whacky style on the jig head gives it a different action as it falls and when you move it, but defeats the main reason for jig head worm rigging - the worm tail will not stand up off the bottom.
For whacky style rigging, stick the hook through the worm in the middle and then slide the worm body to the head of the jig. This leaves two tails sticking out to wiggle enticingly.
Rigging your jig head worm weedless helps it come through cover without getting hung up but makes it a little harder to set the hook since the hook point has to come through the worm and the worm can bunch up in the hook bend.
Thread the worm on the hook but bring the point back out of the worm about 1/4 inch from the head. Slide the worm head down the hook shaft to the jig head then bury the point of the hook back into the worm. Remember to bite a little off the head of the worm to make it fit the jig better.
Another way to rig your jig head worm weedless is to stick the point of the hook through the head of the worm about 1/4 inch from the end rather than threading it on the hook. Then slide the worm body against the head and stick the point of the worm back into the worm body. This method works well with short shanked hooks on jig heads. The shorter the shank the harder it is to slide the worm head down the hook shaft and stick the hook into the worm body without makeing a hump that will twist your line. You do not bite the head of the worm off for this type jig head worm rigging.
Weedless Three - Jig Heads With Spikes Or Springs
Some jigs come with a spike or spring on the head of the work to help rig it weedless. If you have that kind of head stick the head of the worm on the spike or spring, pushing it tight against the head. It helps to bite a little of the head off to make it flat and fatter. Then stick the hook into the body of the worm to make it weedless. Rigging this way helps keep the worm from bunching up on the hook shaft when you set the hook on a fish - the head comes free and can't slide down the shaft since it is not on it.
Give a jig head worm a try. Rig it any of these ways and see which one you, and the bass, like best.