Those waves look really ugly. Lots of power there.
Harborless it seems like when I was in my 20's I did a lot of this sort of stupid thing. I was always out in whitecaps or rollers in my 20's and now in my 40's I seem to always hit the weather perfect. You will learn it.
I always look at a surface map for the current conditions and then a day out. I like the post where someone mentioned the difference between convection wind and wind from a system. Although I looked at a national surfce map for Thursday and I can't see what cause those conditions.
Here is the sailflow plot for ponce during the time you were out - 18 knots turning North Most wouldn't have left sheltered water looking at that. The prediction on the bottom does seem to confirm Marks statement that conditions are looking better Sunday/Monday