I used to do a bit of ghillieing on stack and hope and different methods were definitely needed for the 2 lochs.
On Hope I would work the dapping rod in the middle of the boat while the guests fished wets either side, the dap would get the fish up and excited for the wets to be cast over them usually resulting in a take. We did catch more sea trout than salmon but i think that was down to the fact that there wer ****** all salmon about, any that did come would also usually come first to the dapped fly. Pulling the dapping fly away from a fish that wants it is a very hard thing to do though and you certainly earned your tips doing it, although one or two would inevitably "hook themselves" before I could pull the fly away.

On Stack the dap would rarely move anything and a well fished muddler in front of an irish shrimp or something else would outperform anything else most days, saying that though, blank days on Stack outnumbered catch days by about 3 to 1, thats a lot of rowing without much reward! My heart used to sink when the guests wanted to go to Stack.
Bw