"pro Shaco players"
so any shaco player? Because they are all "pro", easy street champ.
Here's a tip, push Q, then push R, then win the game. That's legitimately all there is to it.

You can use Deceive to run away.

Tacos are messy

just run straight for their nexus and back door their nexus towers, trust me you can do it 0.<

Meat, cheese, lettuce, onions, and maybe tomatoes wrapped in a flour tortilla or a corn hard shell.

hes fairly hard to do well against a competent team who at least utilizes sight wards, and no matter what you do your damage tappers off late game so you wanna try and win early, put as much pressure on them as possible, if you feel its safe to try attempt a co-ordinated gank on a a lane when their partner recalls so you can 3 man push that tower down fast. jitbs are pretty amazing, droping them in all the high trafic area's you pass through could need you kill or a guaranteed escape. use them often.

but but you will find will do well if they make mistakes, your very unlikely to be able to gank someone being cautious and they likely have a few suprises waiting for you. if they are decent your options are limted as your build, AD/AS shaco are hit hard if they cant gan so have to spend large amount on times in the jungle to catch up till a hance to KS a few people in team fights happens. tank and AP shaco however are free to start laning and can gank later, they are slow starts but are more consistant.

Tacos are OP expect nerfs in the near future