First I wouldn't tug on that clone at all! once it's set in the pellet I wouldn't mess with them, you could damage some of the just forming roots! I'd make sure and not use too much clonex, less is more. If you have a big glob of gel on the end of the clone, that's too much and can sometimes turn the end of the clone to mush. I used to use a heating pad on the lowest setting with a towel folded over it beneath the tray, sometimes this helps promote root growth. The cuttings in your picture look tiny to me. the stems are tiny and I wouldn't do all that leaf trimming unless absolutely dead. the least amount of trauma the better. But try and let the mom grow out so that you can get some nice healthy cuttings from the top of the plant. If the plant your cutting from is having issues the clones will be harder to root, so make sure mom is a lush green jewel before cutting. The aero cloner is really the best route in my experience, it's cheap, easy and successful. I'm not saying that hormones are bad or the like, I'm just saying that works for me with plain water. Now maybe my local water supply has some trace elements that supply the clone with the needed auxins that help them root or maybe it's the chloramine who knows? either way they all root and about 3 weeks from cut day mine go into flower.
The method Dr Fever showed you is how I used to do it when I was using rockwool, just substitute the small rockwool cube instead of pellet or different medium. I had good results with that also it was just a little more hassle than with the cloner and sometimes there would be 1 or 2 that just wouldn't root. But all I use when it's time to take clones now is a sharp clean razor blade.
As far as 1 pound every 30 days I'd think that was attainable fairly easily depending on how many plants you want in rotation. If you have 1 1000w hps with a decent vented reflector you could do 4 larger plants under it staggered 4 weeks (or middle week if longer than 8 week flower) apart. To start 2 go in after vegging them til they're say a foot tall or so, then after they're 4 weeks in you add the second 2 that have vegged til the right size. Just realize this method (basically sea of green) takes you staying on a very strict schedule. If you laze out a week or so and don't take clones you'll fall behind schedule and there goes your every month harvest. doing it this way you'd harvest 2 four footers every month and with that big of a plant (in DWC buckets) 2 of them in the right strain would easily give you an lb. but like I say your going to have about 8 plants in different stages of growth at all times, clones, veg, and flower. Those are big plants and if given what they want and it's a decent yielding strain, you'd have colas the size of your forearm easily. My plant's aren't that big, I flower right after they start to grow height wise in the cloner and end up with about a 1.5 to 2 foot plant that yields from 2+ to 4+ oz's a plant depending on strain but on average a solid 2.75.
Good luck
so don't touch them for the first 3 days? im about 2 more trials away from making or purchasing a Daisy Cloner.