Best pattern for elevated lava or water?
Related to this question, I am trying to create an elevated surface where I can put water. The surface below is made up of ladders/signs to keep the water flowing down, but still allows items (e.g., eggs) to pass through.
What is the optimal pattern for the ways in which the ladders would be laid out in, say, an 8x8 square area?
If you use signs, you can place signs on other signs and just cover the area needed. There is no way to use less than 1 sign per block though.
Edit: As of 1.8, you have shift-right-click to place signs on other signs.