Hi,
40 - 50 Lie - apply about 20% more power. Just be careful that you chose the right club. It may be you have to drop down a club. Just do your distance, wind, elevation cals etc etc then add 20% (of full power) not 20% of the distance - if you know what I mean. You'll need to practice it to fine tune.
20 - 25% lie - half of the above etc etc etc - OK?
Hope that helps.
Cheers Doug