Dun Laoghaire

I purposefully limited myself to taking 20 pictures in the 2 hours I had to walk along the Pier - normally I just go trigger happy, but I'm trying to improve.

I think it worked - but I'd like some feedback, and some thoughts on the 3 Boats I and II and the Poolbeg Chimneys I and II as I'm unsure which out of each pair is the better photo.