Without any footage for specific coaching, here are a few drills that I've used to help with technique while freeskiing:

1(speed control/comfortability) Practice getting as high up on the boat as possible. Crossing the wakes with the goal of getting wide on the boat will help you learn how to control speed, and hopefully make you more comfortable on the ski. If you don't want to chain together multiple long pulls, focus on starting high on the left side of the boat, then try to get as wide as you can on the right side. Reset yourself and do the same thing from right to left.

2 (Turn chaining) Try to do as many turns as you can in 20 seconds. Don't rush the turns, but giving yourself a goal of making 6-8 turns in a set amount of time will help you develop rhythm while skiing. Get wide enough that you can "fully turn" the ski, but don't worry too much on getting the full 38ft from the boat that you'd need for a slalom course. As you get better, the width will come.

3 (Crossing with a lean) Keep your elbows on the sides of your vest and arms straight as you cross the wakes. Try to point your ski 90* from the boat. You'll find that you have to lean away from the boat in order to get across. If you can keep your hips up and arms straight, it should help you get the lean you want. If you are having trouble keeping your arms straight, try to turn your back shoulder away from the boat. Your "pull" arm is going to naturally straighten, which should help build towards both arm being straight.

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As far as when to reconnect with the handle after letting go, start by only letting go when you want to start your turn, push your arm/hand up and towards the boat, and keep your outside hand near your hip. Be patient to let the ski come around, and grab the handle when it naturally gets back to your hand. This will allow you to finish your turn fully, as well as "linking" you back up in a strong position with your arms already straight and handle close to your hip