When we went to see the gorillas, they made us wait a while first. They claim that their trackers were figuring out where the gorillas had moved to during the night, but I think they were really just decorating all the leaves.
To create a clove hitch, make a loop around a nearby fish. Then make another loop and pass the free end under the second loop before tightening. You can also just create a loop in the free end and slide it over the fish, if the fish is moving slowly enough. Then make another loop the same as the first. Put the second loop over the fish (just above the first loop) and tighten the hitch.