299 KMB bus from Sha Tin terminus under the plaza. Get off at the Sai Kung terminus, and walk over to the 7 eleven and opposite the 7 eleven is the mini bus rank.
Get the 9A green roof PLB which goe's to Choi Hung MTR, get off at the Marina Cove Entrance 1 or 2 ( 2 is where the welcome super market is ) which will be on your left about 5 km down the road..
There's another mini bus that goes to Hang Hau MTR which would be the biggest shopping mall that services the Clearwater bay area, as a "central" meet up / pick up location, following on from your other post. Can't remember the mini bus number but its clearly sign posted at the Mini Bus Rank and HANG HAU written on the bus banner.
We'll be sailing from Hong Kong Marina today as a matter of fact, a stones throw from marina cove

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Unfortunate you didn't buy property in CLB in 2004 like when we lived there, prices have at least doubled, in some cases tripled since then.
Enjoy your property seeking mission, perfect weather for it.