You may be aware of an excellent existing SARE study on modifying backpack sprayers to make them more user friendly and better at applying a consistent rate of product:
Based on recommendations from this study, we recently purchased a Jacto backpack sprayer. It hasn't been delivered yet, so I can't comment about how well we like it. It does have a large piston pump compared to a Solo (less fatigue), the ability to put two flexible spray nozzles on a single wand, and various pressure regulators to put out a consistent flow. Like you, we're interested in minimizing the amount of time we spend going through the tunnel or field with a backpack sprayer.
You may be aware of an excellent existing SARE study on modifying backpack sprayers to make them more user friendly and better at applying a consistent rate of product:
http://snyderfarm.rutgers.edu/snyder-backpack-sprayers.html
Based on recommendations from this study, we recently purchased a Jacto backpack sprayer. It hasn't been delivered yet, so I can't comment about how well we like it. It does have a large piston pump compared to a Solo (less fatigue), the ability to put two flexible spray nozzles on a single wand, and various pressure regulators to put out a consistent flow. Like you, we're interested in minimizing the amount of time we spend going through the tunnel or field with a backpack sprayer.