Okay so the sock thing- mine will completely pull off my kids socks and he ďconquersĒ them like theyíre a toy, all to initiate play. I gave up on that one because he doesnít do it with me, and he uses incredible bite inhibition when he grabs their socks when theyíre on their feet. It drives my kids crazy when theyíre putting their socks and shoes on for school, but they also sit there and giggle half the time, and stick their feet with socks on them in his face at other times to get him to play because they think itís funny. I have decided this is a kid training issue, not a dog training issue, and if and when they get sick of it then theyíre going to have to help solve the problem. I started treating shutting gates the same way and I feel your pain. Itís more work to get my kids to clean up a puppy shredding mess than to clean it up myself sometimes, but it took a few times of cleaning up those messes before they remembered to shut the gates and doors. Iím also mean and Iíve been known to have them come all the way back downstairs just to shut the gate
Everyone is learning together, it just takes time and repetition for those habits to form.
As far as him nipping at your own feet as a cue to go potty, I wonder if thereís a way to replace that cue. Maybe someone can suggest a way to actively train that. Mine did it, too, when he needed to poop, but he doesnít anymore, and I donít know what changed. I did bell training, which turned out kind of funny. The bell was too heavy, and I meant to replace it but I never got around to it. We still rang it ourselves every time we took him out. Eventually he started sitting by the bell, even though he canít ring it. I didnít start bell training until he was already reliable though, and a big piece of him being reliable with poop was adjusting his diet. Maybe you could try taking him out earlier before he gives you his cue and training some kind of cue at that interval, then back off until he gives you his cue and use the replacement then. Not sure about that!
Mine was a finicky about poop but itís gotten so much better. If there is a car next door I donít even bother, I know it will take forever because heíll just watch. Heíll still pee so I let him go and then take him back out in 5 minutes. Then I carry him to a spot and tell him to go potty and put him down. If he doesnít start sniffing I pick him up and do it again. He rarely needs that second prompt, but sometimes he remembers someone was outside a few minutes ago, or that itís almost time for the kids to get home so heíll start watching for them. Itís just too cold outside for me to wait around for him to poop, Iím way too impatient! I do think some of it is age. Heís 2 now and he still gets distracted but itís not anywhere near as intense and hyper. So keep pushing through!