Hey buddy, Your welcome.
I got your back this time too.
What you need to use is contact cement, the shit you use to patch a bike tire.
Pry open your boot, find something suitable size wise to use as little wedges to hold it open.
Get your trusty bamboo skewer, They key with contact cement is too use a thin coat, as little as possible, just don't miss anywhere. Smear it past where you need to go, because the outside edge is the most important. Then let it dry.
You have to do both sides & make sure it stays open. You need some kind of wedges.
MUST BE DRY, if not it won't do shit
You only get one shot when you stick it back together, so make sure everything is going to line up nice.
Squish & rub off all the glue that went past where you needed to go.
As long as you go past where you needed to go, you know that the whole outer edge is good to go.
If you got enough cash buy a can of spray adhesive. same shit just in an aerosol can, you'll never have a shoe or boot problem again.
This is a wicked site, bookmark it.
This to That (Glue Advice)