Long slouchy beanie tams...a few answers to your questions

Now, I have received several questions concerning the "long style hippie tam" pattern from last year, made in willow green wool blend.
I don't have this tam anymore, but I have quickly taken 2 snapshots of some longer tams.
As you can see, they are not round beret style tams. I start with an increase at the top like you would start a beret, but I stop increasing before I would end up with a dinner-plate size crown. I make the crown up to smaller dessert-style plate size:)
Then, depending on my pattern (in blue-brown it's an open weave with 1 dc, 1 chain, (skip one dc), 1 dc) and in orange it's the same with half-double crochet stitches.
I just add rows to the round crown until I have reached my desired length. I don't increase or decrease.
If it turns out really wide, then I will crochet 1 row where I decrease every 6th stitch by crocheting it together to reduce the width. As you can see in the orange tam, it comes in a bit towards the rim. If it's still too wide I repeat another decreasing row.
Last row usually is a row of single crochet stitches with a gap inbetween where I lace the tie-string through.
In the picture of the orange tam you can see the "underside" more clearly, where the rows are joined without a width increase, this will sit at the back of your head where it folds down and is invisible that way. Darker colors or variegated yarns usually hide the joining, that's why I picked this tam for demonstration.
To Fabien and other blog readers who had emailed me, I am not sure if this answers your question so far.
For the length I don't count rows, I have a measuring tape and go by inch length.
I estimate length 12" for a good size rasta tam, 14" for extreme long dreads, 10"-11" for moderate, maybe chin-shoulder long dreads, 8"-9" for short hair, with just a bit of slouch.
I lay the hat flat and measure from crown to rim. The width usually is an 12" average.
Any questions?
Please post in comments, I'll be happy to answer.