Long and smooth... depending on condition, almost anything. I used to use a Ebonite Stinger 2 piece pearl drilled 45x5.5x65 with a hole on my pap, and control-it. Another example is my Track Desert Heat drilled 65x5.5x40. If you're looking for long, you are probably talking about lighter amounts of oil, or a short pattern that you want to keep your angles closed on.
You could do something like a Tropical Breeze drilled 65x5.5x65. Or a RotoGrip Shout, Brunswick Slingshot (tone down the cover), Columbia Scout/R, Track 300C, Hammer True Blood (Plastic with a core)