Barryb,
You're pretty limited on what volume you can carry - usually around the 100ltr mark, but you are correct about the 40 gal capacity. Flagging - what I was meaning was that the spray area is marked out for you, no men walking with flags, i dont think health and safety would like that too much!!! But yes we are free handing, the good old MK1 eyeball. But things are looking up, i'm pretty sure we'll be using GPS soon.
Do you find the AgNavs reliable? Is it similar to what i was saying about the printouts? We do most of out spraying on hillsides where there is no access with vehicles, does this system compensate for reduced swath widths on angled slopes?
Cheers Static