[VFB] Glue Gun flies?

[Desert Eagle]

Someone last year was discussing using a hot glue gun to make egg flies I
think. I was wondering about the technique? What I was wondering was is it a
sinking type glue? If so is it buoyant or fast sinking? I was considering
using it to form heads on minnow and crawdad imitations. Can it be colored
while applying? Just some thoughts on a rainy day.
Jimi