Decided to revert to previous M.O. : PVC pipe, capped at one end, other end equipped with hose junction. Small holes punched at intervals.
Previous endeavour had holes randomly placed; sprayed unevenly.
Resolved to do better.
How engineer holes along 10' length? How many needed for optimum coverage?
First thought: Alternate holes along opposite sides of pipe. But at what intervals? Punch holes at wide intervals and then intersperse if needed?
A lot of work. However, once I bought the fittings (pipe courtesy of neighbor) gotta go through with it.