I use leadcore alot, especially in the bigger and deeper reservoirs in L.A. county and San Diego. I use an Ambassadeur 6500 C3 and a fiberglass crankbait rod like a Daiwa 6"6. This keeps the fight enjoyable and still allows you to troll deep enough and bring the fish in. I sometimes step up to the Loomis 843 when I troll all 12 colors out or using 15lb leadcore and the trout or bass tend to be on the bigger side. The best trolling lakes for the bigger hold-over trout I have found are Cachuma,San Vicente,Piru,Casitas,Folsom - one the best, and any of the lakes that have deeper depths year-round and less stripers helps ! Good luck