The manual has a discussion of where to locate a manual bilbe pump.

For safety, it should be mounted where it can be operated from both inside and outside the cabin.

For ease of operation, it should be mounted so the handle is vertical (on the bridge deck. That way you move it back and forth rather than up and down (less tireing).

That said, most people mount a Whale, Edson and Guzzler pump on the cockpit locker bulkhead near the tiller.