Keeping a log of sets
The walk from the flea market back to the car is when most of the good ideas turn up. We changed one thing at a time and wrote it down, because memory is generous and notes are not. Last spring we lost two weekends to weather, so the indoor jobs finally got done.
There is a point in every set where it looks wrong, and it is nearly always fine ten minutes later. It took us a full winter to notice that the simplest sets were also the ones people asked about.