This video shows you one way to achieve 100% Total Destruction on Angry Birds Surf and Turf level 13. If you have an alternate strategy please feel free to leave a detailed comment below.
Loft the Red bird through the rope supporting the last tower, causing it to fall and trigger the TNT below. Use two birds to blast the tree in front of the slingshot platform. Fire the last Blue bird into the bottom of the first structure, and place the Sardine Can in its rubble.