Compared to the US courses I'm used to, many bunkers on courses I played during my England trip seemed to collect golf balls, almost like they had a gravity field reaching out many yards in certain directions. A big part of this was that they don't have collars of rough in the US parkland style and I guess it was also because the well-drained links and heathland soil means it's no big deal if water drains into the bunkers from their surrounds.
But absent such great percolation, how do you go about letting bunkers exert their influence on shots that pass nearby without flying into or directly at the bunker? If you must have slightly turned-up lips on the bunkers to direct the surface flow of water away can you compensate by using fairway contours that deflect the ball with sufficient velocity to run up and over the lip? I'm speculating that the key is to exploit differences in how water flows and how golf balls rolls. Does it make any difference if the water is travelling in sheet flow rather than streams?