LCD TV - secure mount in caravan

Hi All,
Got ourselves an LCD TV/DVD for Chrissy for our caravan ready for a few months touring later in the year (dont usually take one if only going for a couple of weeks).
We have one of those slide out shelf things on top of the fridge to fasten it to and have 'custom made' some bracket to fasten the base of the TV to the shelf. What I was wondering is how LCD TVs cope with being 'jiggled' around inside a caravan? It only has a little bit of movement in the screen (because of the hinge that allow you to tilt the screen). HWMBO said he could make up another bracket to hold the top of the TV but Im not sure this is necessary (and not sure I want more holes drilled all over the place!) - will a tiny bit of movement hurt?
Thanks in advance :-)