Hello Gerry, glad you have been able to see the CM method. When applied to the cervical spine I find this is a means to reliably reduce protective tone and most often the means to restore normal pain free movements for long periods. There will always be a subset of neck pain sufferers that do so when SPB is driven by structural losses to normal integrity and/or trauma/disease processes. Many of those however who I have treated successfully are victims of the cyclical tightness , mentioned by you, that is more likely the "natural"product of internal drivers of protective behaviour , where the threshold of inflammatory irritants induce a repeat of and incremental additions of SPB.
Most of the longer posts I have written on this subject can be found on the Rehabedge.com website, further more recent posts on Somasimple.com.
Self treatment is possible with CM to the neck. Results depend to a large degree on the quality of and duration of these passive movements. Try sitting in the littlest room ( on the throne) where you can position your elbows at head level on the adjoining walls. This is of course possible where your throne is indeed in a little room, alternatively sit in the corner so that your elbows can be set and movements by the neck INTO the treating thumb can offer reasonable approximations of CM type movements.
What beneifits you may get however I warrant will be limited and short term this way. Best without doubt would be to offer the CM info to a friend with strong hands or enlist a willing physio who may already have skills of a similar kind. You appeal to me as a relentlessly curious kind of guy Gerry, I have little doubt you will find value. Good luck and keep posting.
Cheers