Clean your felt and the sole of your boot real good, and then let them dry all the way. Really, not just a little bit, but all the way dry. Then, follow the directions. When it says to apply to both the boot and the felt, and let the glue dry for like twenty minutes, they aren't kidding. If you don't want to do it over in a month, wait that twenty minutes before you press them back together.
Patience is a virtue.
Since your felt is probably mostly attached yet, use a popsicle stick or something to jam the glue as far back as you can. Worked great for me, haven't had any problems since they came apart the first time. Good luck with the boots,and good luck with fishing. Up by using the Post Follow-Up button below. Navigate the content of this site with this pull-down selection menu.