I've been using Gorilla Glue since the product was released.  Isteer many people towards this great product.  I also use it to glue anything that breaks.

A thought for a new product...

A Gorilla based wood filler.

It would need to be water resistant and bond to nearly andy material after the rot is removed.  Quick cure would also be nessary along with many of the great features of the Gorilla products.

I thought of this necessity after the hard winter we had.  A lot of ice and water damage has caused rot and damage at the bottoms of doors and door frames.  Not enough to need replacing, yet,  but a good repair would give many more years of service.