Run Siege jack light. One Defender and that's it. Make use of his spell Foxhole. A lot of players like to hide their caster/lock behind a jack/beast. Foxhole will drop the model into a dug in position, opening up line of sight. Ground Pounder attack is your friend. It ignores pretty much everything (including Swamp Pit.)
Do you have any Siege or eHaley tactics you could pass on. I seem to not have luck in the games, but I really like both these casters and want to make them work.