The dock was built a little higher than the old dock so it needed a higher ladder to get out of the lake. To meet an immediate need I stuck in a 12′ aluminum extension ladder. It seemed to be about the right height/length.
So, when it came time to build a proper wood ladder 12′ seemed to be a good idea. So did angled steps so the ladder wouldn’t be straight up and down.
The angled steps seemed like a good idea, but it took three attempts to get it put together correctly. Thank goodness for power tools, and deck screws.