Their 'sabbing' tactics for matches and my ideas for counter acting them-
* Blow a whistle 10-15 minutes before the start of the match is due to begin. Some anglers may start fishing and be disqualified. Blow a whistle again near the end of the match. Some anglers may pack up early.
I cant remeber the last time anyone blew a whisle for the start of a match but as thier blowing them we know where they are.
* Row up and down the river in a canoe or boat to prevent the anglers from casting or make them reel in. Go near to the line / float and disturb the surface of the water with the paddle to scare fish away.
if depth alows use chest waders, wade out and tip them out of the boat, it'll cock your swim up but it'll be a laugh!
* Swimming, wading or splashing your feet in the water (wetsuits, waders, wellies advisable depending on weather conditions!) to stop anglers casting and to scare away the fish. If you can, remove line from water, but be very careful not to break it or damage any other tackle.
Rember to strike at any movement of the float if some longhair is in the way of the hook it's just an accident.
* Standing behind anglers can make casting more difficult and your shadow on the water may scare away the fish, especially when the water is clear and still.
Warn the sab that you are abouts to cast then do so, if they get in the way it's thier own fault.
* Use poles, (e.g., long bamboo canes), to disturb the float and/or line. Try to lift the float and/or line out of the water, but again be careful not to break the line or damage the float.
Use cupping kits to pour maggots or even better cat meat over any idiot doing this.
* Use high powered water pistols aimed at the anglers float/line to encourage him/her to remove the tackle from the water.
Use high powered catpults to fire maggots or again cat meat at any idiot doing this.
But really the best thing to do is just to ring the police.