I don't think Morgan Marina has a ramp, they use a lift. Too bad the black duck limits aren't more liberal, Morgan creek would be sweet.
If you can lift your boat, you can also take the street behind the night club (can't remeber the name) on the north side of the creek by the bridge and get right to the edge of the water. They have placed some large rocks so you can't back in a trailer but pretty easy hand carry a boat 10ft. if it's light enough. Be careful with the tides back there. I have made the mistake of staying too long and the walk out with your boat SUCKS! It is deep sticky and stanky mud.
For now that place is basically a one and done spot. Not much else in there for some reason. On occasion the buffies head up into the creek and there are some mallards but the black ducks outnumber them 10 to 1.