Tippet is too one dimensional a forward, I think he is a far better Ruckman than he is a forward and if played solely there and trained solely there would really excel.
Instead of having the ball kicked to him high while he flails about with two guys on him. He can be a ruckman who occasionally rests forward where his presence could be used as a last resort long kicking option, not as the teams main forward entry tactic.
Also he is over paid and over rated, he really does nothing. Who cares if he has guys hanging off him, do something to fix it instead of sticking him up forward where he gives the Crows nothing. That is the important thing, he would provide more value as a ruckman than he does as a forward, drop Mckernan and bring in another small, God knows the big forward line isn't working and the Crows could use more running players.