Yep the best way to do it as is previously mentioned. Score it pour boiling water over it and then dry it and salt it. Also it's a good idea to leave it out of the fridge for about an hour before you want to cook it, as from fridge to oven it doesn't cook as well.

Timing really depends on the cut. We tend to use the time as a guide but always use a meat thermometer.

We take roast pork very seriously in this house LOL.