Ray those are great points about the wraps and a spool of jasper is a good idea.
PGST33.jpg
The topic of tip or stem is actually of no significance to me at all, but I know it's important to some. Actually it should be important to be comfortable with both methods, due to the odd feather. I find that when a feather has a taper in the stem, usually has a taper in the hurl (fibers) are longer at the base and become shorter toward the tip. It's only a matter of preference, but I like the longer fibers to extend from the head and the shorter ones to follow toward the bend. Manipulating these in any number of ways creates different effects and they are all great.
Here's the bobbin I use for all my spools, endlessly adjustable. Ceramic tip and really nice balance.
bobbin_metz umpqua 02.jpg
The Wasatch is really nice and kind of showy too. Luxury isn't always a bad thing.
bobbin_wood bobbin for pearsall.jpg
Is this the one you were talking about?
w