IF YOUR POND HAS A RUN IN IT THEN YOU CAN USE A CONIBIER NUMBER 330 IT WILL FIT ACROSS THE RUN UNDERWATER THAT WAY YOU WONT CATCH UNWANTED ANIMALS (IE; DOGS CAT ECT) IF THERE IS A DAM I LIKE TO TAKE OUT A FEW STICKS AND MUD TO LET OUT SOME WATER THIS ALWAYS BRINGS THEME TO INVESTICATE TAKE A #3 DOUBLE COIL SPRING AND PUT IT WHERE YOU THINK HIS FEET WILL TOUCH WHENE HE COMES TO THE DAM ATTACH TO A DROWING WIRE AND YOU WILL CATCH HIM