Daveh gave this comment/tip on Denis Toomey's Travolo
This was my 50th birthday present from my wife.
Whatever you do, use sunscreen, and a LOT of it.
Even when it\'s slightly overcast, the UV will nail you big time.
Get as close as you can to the front of the ship with your camera, for some amazing shots of the locks as you progress through. Miraflores locks are best.