questions bout shoes  

Try shoe goo or gorilla glue. Shoe goo is designed for repairing shoe soles and Gorilla Glue is the strongest glue that I have ever encountered. But be super careful to make sure the glue dries completely before you try wearing it. And also walk on something pretty flat to make sure the heal is not going to give away. It would be awful for you to hurt your ankle over a broken heal.

Your best bet would be Rhino glue,never used it before but looked it up..also looked up Gorilla glue also but it said it was better used for wood type projects.
Here is what it said about Rhino Glue..
What makes Rhino Glue different from some of the consumer grade glue's? Rhino Glue is a professional grade adhesive used by manufactures who required a stronger glue in larger size bottles. Now available to the public you can build your projects Rhino Tough. Rhino Glue's clearer thicker gel offers better control and working time on porous or non-porous surfaces. Rhino Glue will not foam, expand or turn brown and does not require mixing or clamping.

Unlike some other adhesives Rhino Glue's Stress Tough TM formula will help your projects resist impacts, shock, moisture, heat and vibrations. Rhino Glue will bond plastics, vinyls, pourus woods, rubber, ceramics, metals, glass, leather, jewlery, fabrics and more. Rhino glue also has excellent shear strength and is ideal for indoor or outdoor usage. We have manufactures from many different industries using their Rhino Glue for years on assembly and production projects. The Rhino nozzle tool dispensing system is designed to direct and control the perfect amount of adhesive everytime.