A great trick for landing very large trout on light tippet.
position yourself in a way so that the trout will be fighting upstream of you. If the fish mannages to drop downstream from you it will have greatly increased leverage against you, this is because it is using the current as well as its strength. If you are downstream of the fish it is forced to fight against you AND the current of the river, thus giving you the advantage.
This tip can really help you if you often fish 7x-10x especially in a competition environment.