Robo
Several of us are at Rockley, they increased their security after 7 of us had our engines stolen a couple of years ago.
The channel isn't too shallow, I can get in and out at any state of the tide and don't have to worry about the bridges.
Keeping to the speed limits, it takes me 21mins to reach Stakes from Rockley (6knts in Rockley channel then 10knts), it took 17mins from the slip a Cobbs, providing the lights were with me at the bridges, (6knts all the way).
In the winter it's quicker from Rockley about 10mins (@30knts once clear of Rockley channel).