Hi Astrologer50, yes I love Solar Arc directions. I have Noel Tyll's book on them and it is fascinating and as you say, very easy really to spot them.
What is however very important here is that you cannot just look at a Solar Arc directed chart and conclude from that alone. A SA hit will only have an effect when supported by important transits and progressions at the same time the SA planet hits another one, or, when there are several SA hits going on in the same year. It this is not the case, then you wont notice much from these hits. I copied one of the threads from way back where rectifying the natal chart with the help of SA directions is being discussed. Have a look. It was a great thread and throws light on Solar Arc directions.
Using Solar Arcs to Rectify a Natal Chart
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This is a site in the internet explaining Solar Arc Directions, written by Pat White.
In this treaty there is talk about Arc openings, which for me is too much of a good thing. I just stick to the way Noel Tyll describes. But maybe one of you finds it interesting.
This is written by Noel Tyll:
Accuracy in Prediction: Using Solar Arcs and Midpoint Pictures