It depends. If you’re in a rear wheel drive car take your foot off the gas (do NOT brake!) and steer into the skid. Front wheel drive, just take foot off the gas, hands off the wheel and enjoy the ride. All wheel drive… I dunno.
Hydroplaning is just a skid on water. A skid is simply when the momentum of your car exceeds the amount of friction your tires can handle. Water on the road surface just makes a skid much more likely because it greatly reduces the amount of friction (actually it makes you break friction with the road, putting itself between the road and your tires). The reason that better tires prevent skids is because they have more of the surface in contact with the ground to make more friction. Better shocks help your car - and therefore your wheels - actually stay on the ground instead of hopping around in the air where there is no friction. Having sway bars and tower braces can be a help too, since they prevent having uneven friction on the wheels. :tup: