Unless we follow my plan of putting a ramp with stick wall on top behind it. You'd risk at least giving yourself a concussion if you tried to flat out jump (then you'd slide into the moat, which may result in drowning), and to climb you'd have to go into the moat first.
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M=Moat
S=Reinforced sticks.
P=Clay ramps.
D="Drawbridge" (plank which can be angled like a wall but is long enough to get across the moat, extends up to "Three tiles", AKA in actual function the length of the moat).
R=River.
.=Etc.
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....MPPPPPPPPPPPPPM....
....MPSSSSSSSSSSSPM....
....MPSR.......RSPM....
....MPS.........SRM....
....MPS.........DRM....
....MPS.........SRM....
....MPSR.......RSPM....
....MPSSSSSSSSSSSPM....
RRRRRRRRRRRRRRRRRRRRRRR
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I think the moat is the next best thing to a wooden palisade, which I imagine is going to take even longer.
Better in my opinion, though, is the
leaning-log watch tower I mentioned earlier in this thread. All we would need for that would be about five logs- three to lean against each other like the posts of a teepee,a fourth one to plane for the platform, and the fifth with branches intact for climbing up and down.
Think something like this, but taller:
Of course, holing up in the tower against anything and everything would be a bad idea- we would want to keep men on the ground to guard the base- but at least we would have a safe place to rest and store small possessions, as well as a structure that could be beneficial in latter stages...
At any rate, chopping more logs is probably a good idea. Wood appears to be our most valuable resource at the moment.