The perfect closing

This closing is completely flat, with no sign of stitching aside from the jog in the color line you would not know it was there.

18 rows with a 2.5 hook

This is way too big but... At least I have eliminated it.  It took a huge amount of lintels to fill it and it hurt when my 5 year old chucked it at me so... That's not working for a sling... 

14 rows are not enough

My pattern for this guy is below, but for slinging, this ball is too small.  Nice tight weave but too small a radius.  18 rows here I come.