If I manage to get some cuttings to take I will experiment with a few of the different ways suggested. We get told alot of things in Bonsai gardening and we can't take all differing opinions on. If we did we would constantly be changing the things we do and get nowhere.
The twig with scars was the first picture you showed. Although welcomed it was the larger size you posted that show a better example. As stated this still doesn't convince me it will be beneficial in my case. I do agree that encouraging lateral root growth while eliminating downward growth is very beneficial to base flare. I think at the moment that correct root work as soon as possible which can then be trained laterally will give the best long term result.
I am starting to understand how your water bowl technique differs from (and solves some of the issues with)the water tray method as the water is not only at the bottom.
I will try and do a quick diagram of the setup that I believe would work even better because the water constantly flows through the soil at a slow rate instead of sitting in water. Power feeding could be done very similar to how you propose. I have a specific fert plan for this year so apart from using more frequently on the swamp I will continue with the plan to use on all my trees and go from there. I allow watering 3 times a day in Summer if the swamp cypress wants more than that I will look at using this constant flow method..
I hope you are enjoying the site I find your discussion interesting

It's too bad your in such a hurry cause the stories I could tell you, Bushels and baskets of stories, hole crates full of stories. But if you can spare a moment I will tell you one story.