You might try the gold or silver rapalas,broken back rebels also.If you see trout suspended at a certain level,near a thermocline , you can use leadcore line ( 18 lb. ) to really target in on the depth they are at.Also , once you know how deep they are you can return again and again to smack um.If your buddy is at the same level,double hookups can be common.The 15 to 30 foot depth is taylor made for leadcore,much deeper and you will want to think about Dipsy Divers or downriggers.For an interesting article on trout trolling with some good pictures,go to the links section of kayakfishing.com and hit on the articles by Les Dollard of New Zealand.Good stuff ! He discusses the use of leadcore and trolling.Scott Shaw