Hi Danny and Speedy,
soaking the line in water is meant to make the line more flexible so it doesn't break as quickly.
Cheers
Max.
Nylon certainly does absorb water but line breaking has never been a problem for me and I've used a lot of line over decades without soaking before use or during storage.
Currently I have four spool heads loaded with Stihl, Husky and Echo line. Line wears down but only ever breaks if it gets tangled in fence wire.
Maybe people with breaking problems are using crappy line, or there is a sharp edge on their spool eyelets.