These are the same rigs I make for myself I like to use the smaller rig on a boat and the larger rig surf fishing. I love this syle rig vs others because it keeps ur bait off the bottom and ive caught so many different fish on the same rig. I get snagged less with my hook off the bottom and if my weight gets hung up i just tie another loop put a new weight on and i dont need a whole new rig. Same idea if i want to catfish or flounder fish ill cut the loop off the smaller rig and make a new one moving the bait closer to the bottom and it is easy to swap out hooks to change to a flounder hook or a monster bends one or the rig lives long enough for the hook to be dull. All around I dont go fishing without a few of each in my bag. There is a weight clip on the 6/0 rigs I use them off the beach or river bank using a pyrmid or spudnik sinker and swing for the fences. Fo the 3/0 rig i typically like using them for flound tog catfish or they can handle big fish off a boat but if u try to surf fish with them the loop knot I use for the year drop sinkers may slip that rig is for drifting and light casts and quick reuse if your sinker is hung up. If anyone took the time to read this thank you for buying my rigs I hope you catch the biggest fish of ur life on them I sure did!