A longer exposure would blur the clouds (depending on your lens). Wide angles show less cloud movement, so the equivalent limit for sharp clouds on my 28mm lens could be as much as a minute. Cloud streaks, the opposite effect, need about 2 minutes to look really good, but again, a longer time on wide angle shots.
The single pole and the wake of the incoming tide deliver a composition of rough thirds, a little formulaic but always easy on the eye. There’s a small headlight streak below the bluffs that a longer exposure would have made more of, plus a beacon light on the Boulder Bank, which is not otherwise discernible. Much of the original upper Haven has been reclaimed.
15 secs at f8. Nikon 85mm; ISO 500