I added the parking area and the beach, and a grass area for playing.
Hopefully it will all get rendered.

Question:
The yellow metal reflective poles which usually go around the parking area just at the start of each foot path. .. these can be removed with a lock and key for park staff to drive over it. How do we tag this?

Also, the metal bar that gets put up at night, to prevent cars from going into the parking lot. .. this one is usually left in the 'open' position. How do we tag this?

Beaches and Tides:
on the yahoo imagery, it shows the beach at eithor high or low tide, depending on the time of day the photo was taken. .. so when were out there at low tide... with the GPS right at the water spot... is this where we draw it? .. or is it at mid-tide.
In some places.. this makes a big difference.

Beaches and parks: .. In many cases.. the beach is actually part of the park.. as the park technically extends out in the water for a certain unknown distance (unless there is a boye out there) my guess would be that proper tagging procedure would be to draw the whole park outline, then draw the beach within the park.

Thats all for now :)
Happy Trails ...
P.S. Great to learn that 'TrailRunner' for the iPod uses OSM :)