The man's way ahead of the game
Take your tape measure out and measure the 'lines', as you call them. You get more plants per row in 'wavy lines'.
He's effectively increased the size of his field
Well, that's what fellas that can't drill straight claim, anyway
I wouldn't think so - we've had garings in Lincolnshire from a long time before we had any POW's.
Can't be sure but I think they're called scoots or scuts??? in EastAnglia.
On game covers it is better as you say to put it in wavy lines as it stops the wind going straight through the cover and also the birds rushing straight down the rows and making one big flush . They seem to flush out better if they can't run through it easy .Better cover for the game than straight runs?