Oops!
Got them all the wrong way around!
The grinning idiot is me, face distorted by the wind (honest!)
The girl on the rib is an absolute maniac /forums/images/graemlins/grin.gif great driver!
You can only lock in or out before high water.
About 2 1/2 hours before untill 1/4 of an hour before.
If you miss it you will need to stay in Portishead Marina and wait for the next tide. www.bristol-city.gov.uk/bristolharbour