Ive been trying the method on a 10ft rod on two outings.Havnt had much success.Spotting the sighter move is the biggest issue i have.
The leader i use is approx 9ft tapered leader attached to 2 ft of bi colour sighter material attached to a tippet ring...i then add 3 - 6 ft of 5x tippet material connected to a dual fly setup.
From what ive read ONLY the tippet material is submerged on the drift and the sighter is kept above the water.I find it difficult to detect movement or hesistation in the sighter suspended above the water.
Its reasonable easy to see an indicator pause or shoot below the surface to detect a take using a standard strike indicator method.
Not so easy when using the euro/czech method.