Yup, Lloyd it's me!
The proof is in the pudding I always say!
Though I wasn't "trolling" just moving myself along the shore, casting and retrieving as I went along. I usually stop when I see a likely spot, using my fins to hold position and fan cast the area starting up shallow, and moving deeper and waiting longer as I begin the retreive to get the fly in relation to the bottom. My favorite line is the one you prefer for this, the Slimeline.
I prefer to be in the boat when fish aren't showing anchored up at both ends and begin shallow with the type one and as I decide to fish deeper in the water column, I switch to the Slime, then the type 3 or four and so on. I rarely fish the dry line unless chironomids are showing, or caddis adults are present.
This allows me the least amount of "dead time" before I begin my retrieve in deeper water(s).
I still like to troll a bit, but for me the casting and retrieving is where it's at these days.
And NEVER be ashamed to use what WORKS!!!! I have about 7 boxes of flies with some very exact imitations and you will still find me fishing a woolly bugger more often than not.
To be successful, it is almost always better to go with a pattern that could be many aquatics rather than just one thing. Hares Ears, woollies, Doc Spratlies, Carey Specials to name just a few. And any colour that takes your fancy is just fine. Just make sure it ain't mauve.
Because that would be gay.
Not that there is anything wrong with that!!