m0useanswered grow question 4 months ago I think your SCROG looks good, and if this is your first time congrats on what you have achieved.
The term mainlining refers to two main points coming out of the stalk at the rootbase, right now your plants has 4, so its not be definition mainlining but it is topped and groomed in such a way to be something like it. I did this on my Blue Cindy plant and it worked out really well.
Keep up the good work.