I use a powered PA speaker. It sounds OK at the modest volumes I need, and I like the flexibility. Most have a weight and form factor that's pretty convenient for carrying one-handed. I always carry along a Zoom B3 too, though honestly I don't do a lot with it.
(A used Yamaha DBR10 in my case. Would've thought it'd be just a little more than you'd want on the back of a motorcycle, but actually, looking at @CallMeAl's specs, it's not that far off--19x12x11", 24lbs.)
(A used Yamaha DBR10 in my case. Would've thought it'd be just a little more than you'd want on the back of a motorcycle, but actually, looking at @CallMeAl's specs, it's not that far off--19x12x11", 24lbs.)