I've completed the front half of my head. You will notice I never get right down to the scalp - I leave a little wriggle room. (My hairline has improved so much. Friends, never give up on lost hair, it can grow back. )It probably took 6 hrs of doing 3 section in 2hr periods whilst watching a film or browsing the net. I part my hair in 3-4 sections. Then sub -divide the front half into 3 sections. Starting from the sides, I retighten row by row. It just seem easier to take a very laid back approach. I'll probably start on the back this week end and follow the same plan. That way my arms don't get tired and I don't make mistakes like joining locs etc. I found 2 very thick locs that I will split. I really don't know why I've sometimes felt I must race against time. In spite of my giving out the advice to 'take your time and don't rush it' I've notice during this reti that my scalp feels so tender. I've had to be ever so gentle not to cause pain.
Another point - because the nape of my neck comes loose so often, I've take to frequently retightening that area. So between my last reti and now I've tightened the nape 2x. I think I will do the same with my hairline to keep it strong and away from fraying shredding or breaking. If you have very slender locs, it's wise to get your retights regularly and closer apart than sommeone with thicker locs. If you leave it too long you can thin out the root and cause the loc to break IMO. Fortunately, apart from 1 loc I haven't lost any, but I'm quite vigilant and will combine a loc if I feel it's dangerously thin. But keeping on top of reti- s can solve that problem.