"The less wind there is the more speed you need because ____ing when there is no wind is very, very bad".
I can guess at what it 'should' say. "Pinching" or "Feathering" when there is no wind is very, very bad. Other possible words to fill in the blank:
crapp
flapp
napp
clapp
pitch pol
stall
gass
suck
blow
eat
drink
stall
float
bobb
paddl
breath
inflat
stopp
luff
eat
dismast
starv
drink
fish
barf
GARY