Crab in as far as you wish, then, the golden rule I find helpful, is use your rudder to point the nose straight down the runway, and use the ailerons to position the aircraft laterally over the centreline.
So as you apply the rudder to straighten up, if you follow the golden rule, you then need aileron to keep you over the centreline.
It all becomes second nature with practice, and is nothing to get worried or scared about..
The golden rule applies to into the wind landings too.