I've been experimenting in an attempt to get a nice looking "swamp base" and I guess you guys might like the results.
Superglue + Bicarbonate of Soda - 1 Layer
Nicely textured surface and quite flat to the base.
Superglue + Sand - 1 Layer
Much better than PVA + Sand IMO. I've used that method in the past and this gives a much better grip and a more textured surface.
Superglue + Bicarbonate of Soda - Multiple Layers
Most of the texture gets lost when multiple layers are used, but it gives a nice depth. The superglue tends to stay within the bounds of the already applied stuff as long as you don't drown the base.
Superglue + Bicarbonate of Soda - 1 Layer THEN Superglue + Sand - 1 Layer
Not great. Certainly has some level of texture to it, but the sand has ended up weirdly placed on the base. Possibly useful for some of rocky shore?
Superglue + Sand - 1 Layer THEN Superglue + Bicarbonate of Soda - 1 Layer
The best result so far. My "poor man's Stirland Battlemire". It's got a really good texture to it.
This one is actually a few layers of the superglue + bicarbonate of soda underneath, but that doesn't seem to make a difference to how it looks.
I hope some of this helps people!