i think some tyers were simply taught (and convinced) that way, and got into a habit of doin' it, which they may find hard to break.....if, they are even conscious about it........the doin' and or the attempt to break the habit. Bulk, (in that sense) is not much of a problem when it comes to a fly you want to sink....more wraps, more water it soaks up.....easier to sink. And as far as trying to keep to the approximate size of the bugs themselves...........we couldn't even do that if all we threw at the fish was a bare hook.....so what's the diff? Virtually everything we throw at the fish is double, triple or larger than the size of the real bugs. Bulk, or the lack thereof (as an enemy), only matters when we tye dry flies imho.....for sillowett reasons and (avoiding it), to keep the fly from sinking. And look at the Wulff series of dry flies.........they pretty much all about bulk, and as attractors, replicate nothin' in nature.......little floatant, and you good to go............nuff said?
If you tye generally speakin', and most of the time manage to accomplish the "get 99% of the tinsle strength outta your wraps", i hardly see why all them half hitches are nessessary. Just slows you down.....not that i care bout that.....but think of the commerical tyer who needs to get things done NOW! He gonna loose money throwin' all those half hitches. If he can't tye a durable fly without wastin' all that time.....he should be a garbage collector.
i really think somma those guys just do it to show off. It does look kinna cool.....

i spose the better safe than sorry theroy can play into all of it, but to me it just seems so unessessary.
