I am a Walleye Tournament Fisherman and I troll with braid and super lines often. I love using them and they have their benefits. Here are some general things to note when trolling with braid.
* your lures will generally run deeper on braid than they will on mono or flouro... braid is stronger and usually smaller in diameter than mono or flouro of the same line #lb test.
* you'll feel way more vibration of the lures action thru the rod tip...
* braid has no stretch so you'll get better hooksets with braid.
I often troll with braid for reasons that befit the situation based on some of the above mentioned characteristics. for example... when Im trolling crankbaits near weeds... braid helps me "read" when the lure gets "hung up" on a weed and no longer swims as it would if it was clean of any weeds.
I like using braid when trolling long line in deeper water... i.e. directly behind the boat.. not using planer boards or riggers... This helps the lures dive deeper and allows you to use less line to achieve the same running depths.
I also like using braid when trolling bottom bouncers. The braid transmits more of the sensitive light strikes when the fish picks up the bait. also if I get snagged on a walleye harness rig, you can break off just your leader and keep your bottom bouncer weight..as bread has a tougher break strength than mono or flouro.
as mentioned already. I like to troll braid on longer rods with a medium action as apposed to a stiff action. and I always put about 6 - 10 foot leader of mono or flouro when im trolling with braid.
I hope this helps...