Hey cbuckley,
What I always tell my students is, the worse you are naturally at spatial thinking, the more likely you are to benefit from templates because it allows you to see more on the page. I was not great at spacial thinking, so as a testaker, I use templates more than the average student.
With this particular game, you could do 5 templates on where the P/S reversible block goes, and then see how that affects the H__ __
S reversible rule. You would not be able to play out the H____ _____.... S rule on its own because there is too much flexibility so you would not be able to make templates off of that rule. In this case, it is better not to do templates at all in your original setup, but if you did, you would play out the five places the P/S block would go. In this case that would have been a waste of time.
If you want to improve in games and templates, do a lot of games. See where templates come up and try and recognize those types of games moving forward. Templates will come up in sequencing blocks, grouping blocks, or rules, numerical distribution, and long sequencing chains to name the most common instances off of the top of my head. This does not mean that every time one of these instances appears, you will template, but you can consider doing templates.
Before I draw templates, I think to myself, will doing this template move around enough of the game to get me deductions in order to be worth my time. This thought process can only last up to about 20-30 seconds or else you are going to waste too much time.
In the questions, you can use templates in a local question if you see the local question creates a binary and you cannot answer the question without the templates.
I hope this helps!!!!
Best,
Ryan