I keep my boat there, it takes me about one hour from Milngavie to get there. Although the time it saves you in launching is worth the 15 minute extra drive from Rhu and Inverkip.
They are a decent and honest bunch of people and facilities are good. They have plenty of experience with ribs (contracts with RNLI, Police and NATO) so it is a good place to be and I would recommend it.
I don't get my boat kept in side for that price. They are not able to launch at weekends so if you want your boat out on a Saturday you tell them in advance and they put on a mooring on the Friday and you use their tender. It works out about four hundred less than the others .
Has far more plus points than minus
Would be good to see some more ribs down there