One of the best investments we made was to "buy" the slips rather than
rent them every year.
We still pay a small marina maintenance fee, but the market value of the
slips has doubled in 5 years.


An asset doubling in value in five years represents a 14.87% annualized
internal rate of return over the holding period. Not bad, but I'd venture a
guess that it's probably not one of the best investments you've made.