Boot sole glue?

I still got a tube of shoe goo. maybe Ill give it another try. Reading up on it, everyone says its superior to clear silicone. I know I tried it once but it didnt hold, I must have not cleaned the leather side enough of the old crap. Ill use acetone this time and get it clean. Hot glue doesnt work, not flexible enough. Its a molded glued on sole, not like a hard sole of a cowboy boot. The look like cheap hiking boots but they have a steel toe and a rigid shank, neither are good in a hiker. There were quite a few bad reviews of them for soles coming off (defective process) and everyone seemed to love them besides that fact, but got them replaced under warranty but these are too old. I already asked. They are close to this.
?u=https%3A%2F%2Ftse4.mm.bing.net%2Fth%3Fid%3DOIP.jpg