Yes, used it last Saturday. Did exactly what it says. Was easy to get in but watch the slight cross current. Picked us up nicely. Don, the owner, is extremely careful as he gains experience and is building a library of bottom pics. He jet washed us off and I changed the anodes and cleaned the prop. Put us back and we motored away for £80 + VAT. Clean hull and prop restored our speed. Have a look at www.sealift2.co.uk and do book in advance.
Time depends on the discussion with Don when you book. He seems flexible at present and we were over an hour. However, as it gets more popular I guess he will aim more for the nominal 45 mins. He is also learning about all the different boat shapes so is taking his time on the setup. He can handle RIBs as well as he has special cradles.