Locating a bilge pump for inside and outside operation: Only one boat have I seen with such an installation. The pump was mounted on the bridge deck bulkhead in the cockpit. The other side was over the sink in the Ariel's main cabin. Will look for an old photo we had.

Bilge pumps are sold in local chandleries and can be found in Defender, USBoat and West Marine catalogs. The little Urchin runs about $60 with a through deck mounting and removable handle. You might send a message to Theis (a forum member) and ask his opinion of the Urchin he purchased last year.