I heart my St. Croix Glass Composite Muskie Trolling Rod.. it's 8' long, model # PGM80HM. It will troll the hardest pounding baits as well as the light stuff extremely well. I have it paired with an Okuma Convector CV30DLX (left handed line counter reel). If you don't need a linecounter, tough to go wrong with Penn reels.
If you're looking for a rod that will do both; troll and cast, try the 8' St. Croix Casting Rod, #PM80MHF. All graphite. It's great for bucktails, topwaters and will troll everything but the largest baits.