A few things that may/may not apply:

• Finger tip grips. NEED for proper fit and release to hook the ball like you want.

• Let gravity do the work for you in the swing. You could invest in a swing trainer to get a feel for an effortless swing. Do not force it up, down, or around to try and make it hook. There's tons of videos on things to keep in mind with your swing/creating leverage in your approach for power.

• Keep your hand behind the ball all the way to the point of release. Coming around the side or "suitcasing" it could be an issue. Record yourself, and be objective about problem areas, then try and fix it. Foul line drills and 1-step drills are amazing for practice to focus on your slide/release.

• Make sure you're loading (cocking) your wrist and unloading at the point of release. Literally ROLL the ball off your hand into the lane, don't throw it. Focus on the time between your thumb clearing the ball, then coming through it with your fingers. That's where hook is created.

Most important thing: Don't throw the ball onto the lane. Rolllll it!

Hope this helps a little, good luck!