I've been doing it for the last five years, hoping to reach 100 places this year. I can see why so few people complete it, the further from home you go the harder it becomes. It does add something to my cycling, taking me places and routes I'd otherwise miss and some of the trivia picked up is interesting.
It can also be frustrating, finding some of the places is harder than others, it's not meant to be a treasure hunt. I'm not always touring with detailed maps so clues like "in the church yard" or "village centre" are a lot easier than those less detailed and expecting you to use the map reference.
If you like route planning, it can be a challenge to see how many you can string together. My record is 4 in a day and 12 on a 5 day tour.
You need to check for changes in questions, though you can use alternative evidence if the question is obsolete.
Give it a go.