Hi Fat Larry,
We've got similar problems at our lottie - rabbits, muntjac, badgers, foxes, mice, birds, etc., etc. What we've done is erect a rabbit proof fence. Six foot fence poles every 2 metres or so, one foot buried in ground. Four foot high chicken wire (small gauge), one foot folded under in the direction of "attack", then turf laid on top (handy for us as we're in the process of de-turfing our beds and have tons of the stuff). Straining wire about a foot about the chicken wire to discourage the deer. Bloody hard work, but it has done the trick (so far!). I think your best bet would be to do a proper fence...