This might not appeal to some people but have you considered a Fuji Snap-Lock real fitting?
I have just fitted one to a bass rod as the coasters I had were too large for the blank.
At first you can just tape them on - when you find the most comfortable position you can whip them. Sounds like I am writing for a kinky forum
I added a single Breakaway plastic coaster. Fitted over the rear of the reel seat it ensures the snap-lock cannot open and adds a 'trigger' to aid your grip.
I have one rod with two snap-locks fitted - one for low reel/one for high.
They are so light and flexible they make no difference to the rod action.
If you try Snap-locks make sure they are Fuji. These last many years (the one just fitted has been on three other rods).
There were some imitations that corroded badly.
Also, some came with narrow feet and some had the feet widened. The wider were more stable.