@Capehill
Hi,
I've been using trackballs on my Amigas for decades.  Just
fantastic for high res screens - avoids all the mouse
padding.
On the classic I still have a Microspeed trackball.  A few 
years ago I found a company called "Clearly Superior 
Technology" had bought those molds, replaced the guts with 
modern laser sesnsors, USB, a scroll wheel and 3rd button:
https://www.amazon.com/CST2545-5W-GL-A ... e-Ergonomic/dp/B06XWLCLGBI also used a number of Kensington trackballs over the
years.  With the Slimblade, I found the whole scrolling
thing to be awkward to use.
Lastly, since scrolling over large distances is so
effortlessly done with just a flick, I've also been
running my WB oversized and autoscrolling.  Gives me
much more real estate in one workspace.   A fantastic
complement to the trackball.
Enjoy,
PJS