One thing I have seen is a major problem for anglers new to this type of fishing not learn more than one way to propel a lure.
Overhead may be great in an open boat and a full casting platform to have as your working area, though seldom is the case!
Charter vessels & private vessels with 2,3 or more anglers may end up with a couple right handers and a lefty, which means that you can't just all rotate in an anticlock-wise manner to cast from a game boat's stern etc.
Learning to cast with a sideways swing out to the right for right handers and vise-versa for lefties in invaluable.
As is being able to propel a cast from the 'wrong side' by levering the butt of your rod against your belly or pelvis and punching the cast 'against your grain' so to speak. Even if is't a 40-50m cast, your may still be fishing!
Going down the park and learning to 'ping' 90+ metres with NO one to hinder you isn't a real world test for when you are on the water.
By learning several other methods, it works different muscles as well, so it helps even out the load on the body during a big day/week of casting.
I can also suggest that whatever is your max, don't step to the plate expecting to do this from dawmn till dusk for a 7 day trip...learn where you're comfort zone is...it may be at 60m...though all day, every day.
A cast of 90m on ultrafast PE 8+ line and large popper is massive when you are on the water....and don't be suprised if a tossing boat knocks off 20-30%!
Practice!!! I've been using fast to ultra fast spin gear for 19 years & have the rotator cuff damage to back it!!!!