From the BASS rules for the '18 Opens:
Among other rule changes for 2018 are:
> The use of non-puncturing cull clips will be mandatory in 2018.
> Anglers who do not remove fin clips (a manmade weight designed to help deep-caught fish stabilize in the livewell) prior to verification will be assessed a 4-ounce penalty per clip.
Read more: http://www.bassfan.com/docktalk_arti...#ixzz4vl42AJoc
Pretty good move, hope it spreads to other tournys....