Indeed, no one really likes to pump.
I also stopped with it when I got my US147. Getting too old for it
I used to pump quite a lot with my former Formula 161.
The US147 really does not need it. It's the earliest planing board I've ever been on.
In the very marginal conditions, you can use a bigger fin than the standard 58.
I use a Deb R12 64 with my 10.9 sail.
The US147 has only 1 aspect in which it cannot beat a Formula, i.e. pointing,