A few of the chickees have ladders, which helps a little with the exit/entry.
To echo Scott, there is no graceful way to do this. Timing arrival/departure at
high tide will help. Some of the chickees that are backed into mangroves are in
shallow enough water that you stand beside your boat and toss your gear up onto
the platform. Otherwise it's hang upside down and reach (hatches help). Ditto
on the comment about cameras- it's not pretty.

Good luck on your trip!