my last atv tow behind sprayer was a fimco 40/45 gallon, forget exact size
I added a larger pump, and I modified the boom, I added sections to each of the folding booms, and raised the boom, added the needed nozzle's
and then added a suspension like hanger system to keep things from bending when on ruff ground
this set up allowed me to still be able to fold the boom in keeping it very narrow
I was able to spray about 16 ft per pass, and I liked this set up over some of the boomless types I also had, as way less drift on days when winds would be higher than I would like to be in
I had a wireless ON/OFF
set up ran off a 12 power supply which was either a deep cell marine battery I had, or I could plug things into the 12 volt cig plug on my atv
Atv sat at property often for long periods of time, and wasn't big on running battery down if I didn;t need to use it to power sprayer!, thus why I had a main battery to run things, I could run about 15+ tanks without every needing to charge a battery
if I was to do again, I would go to a larger tank, and on a base with more ground clearance(taller tires)
other wise was very happy with this unit, ran it for about 10 yrs , maintaining about 16 acres of food plots
now have larger sprayer on site, so sold this one!
but was a very solid working unit for me, no complaints(well I did wish there was a drain in the tank that was actually at the lowest point, to make cleaning tank easier?, one on this model was about an inch or so above the bottom, and had pockets molded inside that always held some water no matter how you tilted ot tipped it)
but it always worked when I went to use it, I sure got my money's worth out if it, all the more so after I made the boom larger and higher!
carried extra nozzles and tips in a bag on it, but never really needed them, , they were AG tips, and available at most all farm stores, so easy to find if ever needed!
now I did have to clean tips and or screens in them once in a while(water I filled was some times drawn from a creek on site, so, got some dirt in tank now and then)
but that isn;t a big deal either takes just a few seconds if it happened!
if you ran clean water all the time, I doubt it would ever happen!