use feel's critplank guide, and tankplank is just a question of tanking up accordingly while balancing how threatening you are via. randuin's/atma's/sunfire/etc.

You won't carry a game in solo queue with AP or tank plank. I can guarantee it. You won't go 20/2 and give help a team full of feeders get a win. It's impossible.

Solo-lane denyplank can get a 20 min IE easily. Do you realize how game-changing that is? With a 20 min IE, you can almost one-shot any of your opponents. And at that phase in the game, that's all you need. So good!