Hans Island is mostly steep-sided limestone or dolomite, so it likely erodes mostly from the sides. Ice floes will basically cause below water line erosion, while freeze-thaw action, chemical weathering and surface runoff will affect the subaerial surface. Per the internet chemical weathering of maybe "one-twentieth of a centimeter every 100 years" could be expected, but this would be in a more temperate climate, so I'll guess a 0.25 to 0.5 cm of loss this past 2,000 years from chemical weathering.
I'm really just guessing, but 500 good bumps or scrapes per year, so in 2,000 years, what, on the order of a centimeter or two?
