Eurocrapter, unfortunately the repair schemes are mostly for the initial stages of a crack found-often even before it is the composite but just a paint crack showing something is going to happen. Once the debonding started, it means moisture has entered in between the various layers of the composite fibre bondings and resin(same for your blades). Dependant on which area of the canopy you are talking about will influence whether repairable by drilling and refilling with the specified bonding agent or not. Again, if caught early enough on your MR blades, you have a similiar repair possible. In other areas they might require a step repair and in others a canopy replacement.