Busy water. Constant small movement rather than occasional large weather.
Traffic is the dominant load here. A dock on a busy stretch takes an enormous number of small movements across a season, and cumulative small movement is harder on fasteners and float straps than a handful of rough days.
The symptoms follow from that: fastener heads standing proud, float attachments working loose, and a general slow arrival of play in the structure. None of it is dramatic and all of it is progressive.
This is a shoreline where an annual look costs less than the alternative, because everything failing here fails gradually enough to be caught.
Cumulative wake load loosening fasteners and float straps rather than any single dramatic failure.
The part of the dock that moves every time the lake does, and the part most often ignored until it will not.
The wide water carries weather further. Damage here is more often wind-driven than debris-driven.
This end of the lake asks more of a dock than the narrows do, and the repairs reflect it.