Wayn, many thanks for correction.
Updated diagram:

thsi side is blocked by other boats
*********************************************
*
PILE 1 PILE 2 *
*
O O *
| \ A B / | *
| \ /\ / | support line *
| \ / \ / | *
| \ / \/ |
| [ ] |
| [ ] |
| [ ] boat | === WIND form starboard
| [ ] |
| / [ ] \ | This side is bloced by other boats too.
| / \____/ \ |
| / C D \ _ |
O O

PILE 3 PILE 4

^
preffered entry / exit is between pile 3 and pile 4.