What will the repairs look like?

Depending on what the repair is, hopefully a new sock, neck seal or wrist seal! With pinholes from the outside you will see no change, as all repairs are on the inside. The first coats soak right in, you will almost not see these. Latter coats look like wet patches, perhaps 1-4 inches wide.  

Larger and more complex repairs are thicker, as they require more coats. Delaminated areas have to be sealed over a larger area.