After a rising injury rate forcing more walking in the lunas, the luna soles eventually wore down to the point of starting to shred the laces.

Hot snot on the inside was getting quite painful.

Decided to loop the laces through the holes.  This would also need to be covered in a patch of rubber. 

Patches would have to be hot snotted on the soles.  They're too expensive to permanently glue.

If the laces were melted, they formed a nicely sized plug inside the holes.  Without adhesive, they might hold up to normal use.  It's just unknown how walking on the plug would feel.

E6000 for bonding laces wasn't promising.  It only seems to permanently bond rubber.  Hot snot on laces wasn't very good either but it was good enough.  A sewing machine would be ideal, but past experience had the stitches causing chafing.  

3 miles later, this was the most comfortable lacing system the luna soles ever had.  It's really been dialed in over the last 4 years.  If only the soles were still only 2 figures.  Helas, the plugs are slipping out of the holes in normal use.  They can go 3 miles before they have to be pushed back in.  Some hot snot in addition to the hole plugs might be the next step.  The only hard requirement for the strap holes is no glue or strap being on top.