We use swim noodles with a peace of pvc pipe in it an a sliding weight so it will stand up better. I also put reflective tape on them. Like saute86 said if there not renforiced youll lose a big fish we had one on a jug that was renforiced it still could hold it under for along while lol. The funny thing is we lost the jug the day befor and found it a soild mile away the next day and thats when we found out how long a big blue can hold a jug under... we finaly got it after 3 times of up and then back in the water