Okay I'll try/interested in the left-handed trackball idea.
Any recommendations?
https://www.amazon.com/Kensington-64327EU-Orbit-Optical-Trackball/dp/B007EQ0PIA/ref=sr_1_25?ie=UTF8&qid=1544645071&sr=8-25&keywords=left+trackball
https://www.amazon.com/YUMQUA-Trackball-Handheld-Finger-Computer/dp/B074TBJ8JN/ref=sr_1_23?ie=UTF8&qid=1544645071&sr=8-23&keywords=left+trackball