Board Thread:Game Discussion/@comment-24007468-20131108142718/@comment-11490363-20131111153513

No one knows for sure, but my guess is that attempting to net the waves before the boss does not increase the net % on the boss itself, but I am only speculating, no evidence either way. It also does not reduce the chance of netting the boss if you try to net the waves on the way to the boss.

And yes, I believe that each time you are at the boss and attempt to capture it with a net, you have a 5% chance that it will succeed that time, regardless of what you did leading up to the boss.