I ve always been plagued with shoe laces coming loose once or twice
while fishing. The problem got worse after my intregal gravel guards
broke. One day I hit upon this idea and so far it s worked well.
After lacing up thru the last speed buckle I do the first part of
a shoe lace tie( without the bow) and thread down thru the bottom
two speed buckles and then tie off at the bottom one.

Perhaps with the knot being in the middle of the shoe it s not
catching on things, also boot stays tighter as it s gripped at top
and middle. Anyway seems to work for me for what it s worth ...

MT