Excellent RU-vid, an alternative and simpler to making the loop wire is twist a smaller anker like loop permanently embedded in the concrete and have different sinker sizes.
I used these with the Team Catfish weight slides to make a ru-vid.comUgkxdmsDj7fQXe77DC0l7P7ua8B3PiESUubM Carolina rig and they were perfect for the ponds I fish. I have also used them to make 3 way rigs and these work perfectly. Haven't had any issues with them snagging in rocks or in weeds yet.
I do this w 2” about 10-12” long for off shore works like a champ as far as freash water I use ol cast net wieght folk throw away and cut the weights off and use that 200 lb test line for rigging
