[Paul Canning]

If you can get hold of some fence stakes or bits of old pipe, drive them into the end pallets just to keep them steady. I'm lucky, I can tie mine to the fence.
This time of year I would pile everything in and cover it with a bit of old carpet, plastic etc, weighted down with bricks or something. In the spring give it a good stir or better still, shovel the compost from one bin to the other and it will rot down better.
Personally I wouldn't worry what it looks like, it's a compost bin on an allotment.

LOL, Im not worried about appearances believe me, Im more of a function over form person :-)

[grendel]

my 3 bins are now up, only 1 has a front at the moment, but I have already over half filled  2 of the bays, one with green stuff and one with 3/4 composted woody stuff..
Grendel

[Paul Canning]

Good man!, I'd be interested in seeing a pic, though i see you forgot your camera today :-)

Mind you, I have to admit, i didnt even go to the allotment today as I was too cold :-)

maybe tomorrow

[PennyS]

A piece of old carpet on the top will keep too much rain out and stop it getting wet and sour.

doesn't carpet leach all sorts of nasty chemicals? 

[Aunt Sally]

Not if it's wool carpet.

[Paul Canning]

Hmmmmm, that could be a problem as these are foam backed i think and i have no idea how to tell it's wool?

[Aunt Sally]

Don't use the foam backed type.  The synthetic rubber foam will crumble off after a while and get into your compost.

[Trillium]

This one is a bit snazzier than what you're probably thinking of:

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[Trillium]

If you've still got leftover pallets, scroll down on this site for more ideas:

http://ilonaloveslife.webs.com/ilovemygarden.htm

[arugula]

Some ideas there!

[bigben]

I have done mine the same way! I held the front in place by bashing in a couple of stakes so they hold the bottom of the front pallet in place then simply tying in the top of the front pallet to the sides. I also bashed in a stake at each corner of the sides to give them a bit more stability.Mine has lasted 3 years now and is doing fine - you will need to cover it though. I did not the first year and stuff kept growing!