Yeah, got ganked stupid by alliance (6 kills in 14 minutes, although I did kill the level 42 warlock who thought he could have a go on his own) and harassed beyond the point of all sense by fellow horde (having horde roving around with bodyguards who then sit on your float in the water so you cant click on it whilst you fish is a wonderfully sociable tactic *not*).
In short I hereby retire from all fishing competitions until I'm level 60 as the ammount of harassement is truly obscene and you get pretty much nothing for handing in the fish if you don't actually win the competition.