The Alvey Telescopic clear bait trap is used to catch smaller fish etc, for live bait (remember it is illegal to take undersized fish).
Extend the trap to its full length and bait using bread inside and leave until you see bait fish inside the trap.
In water with current, simply add a singer to hold in position.
Pick up the trap and pour fish into your bucket.
Do not leave bread in with the bait when you put fish in the bucket as it will pollute the water. Also important to change your water regularly or use an aerator to keep your bait healthy.