brainstorm how to kite away an olaf when he ults

specifically I play a lot of lulu, and an olaf charging into the middle of my team is pretty terrifying because my slows are useless and he just one shots everyone through my shields. I was thinking I could take coin for the %ms towards me and the active to supplement lulu's lack of aoe speed/shields but in my experience coin builds don't work well for lulu. usually I try to stack shields and wait out his ult but by then he's done his job if his team is collapsed on us so that's no fun. counterengage is a no go because he can just sit on our carries and delete them or prevent them from helping the engaged front line.

I could also pick karma or nami or janna or someone else with aoe speed but then I'd have to know before hand and sometimes olaf gets picked after I pick lulu.