Interesting, Benice. Never thought of that.
But even though he was near the beach, he had to walk close to a more social area first - from which the Smiths emerged - on his way. Wouldn't it have been better to use a car as much as possible at this stage rather than have Smithman walking through a far more exposed area with the child? And why not cover her up with something to at least make positive identification as a girl difficult?
I'm thinking that if a boat was involved, then it's not easy to give a precise time for when it will be in the right place at sea, in the same way you would be able to with a car. (Not that I know anything about boats). So it could be that they needed a hiding place near the beach to go to (by car) to wait to hear that the boat was in place
If their original plans had to be changed - because of Gerry unexpectedly doing his 9.05 check, then that would possibly make it even harder as the boat would have to accommodate those time changes. It's not like a car, where you simply sit there parked up for a bit longer than you first planned.
As I say I don't know anything about boats, but if Madeleine was going to be taken out in a dinghy to a boat waiting off shore - then having to contend with tides, winds, etc. would not make it a guaranteed precise operation, in terms of timing.
Also it could be that the hiding place was not ideal, but was the only one available - even if it meant a 2 minute exposed walk to the shoreline.
As I say it's just a theory - which first came into my mind when I was reading about Madeleine being taken out in a dinghy to another boat - as one of the Kiddies Club activities.