Shoe repair - help/advice

[blew]

I did a similar repair on a pair of Sidis where the sole started separating from the heel. Used 3M Marine Adhesive Sealant 5200 based on recommendations.. It worked great, has held up for years of continued use. Takes a while to cure, use a c-clamp to hold the sole in place for a few days. The sealant has some flex, which works well for this application.