Hi Woody
If you are not familiar with mole trapping , go for the small Fenn type scissor trap, they are the smallest ones of the bunch and the probably the cheapest @ around 5.50 each.
The half barrel or duffus trap is the most commonest trap, I use the fenn and the talpex type myself I find the duffus take a lot of ground to set them and really I use them for sandy soil if at all. keep away from the long handled traps you see in the garden centres, they are terrible to use.
Take your time finding the good runs and try to read the ground for worm movement and freshness of the hills will guide you to the best area of activity, take some time to find the entry runs to the areas from adjacent ground, you may find the neighbour has 10 times as many hills and the bit you are doing is a small corner, don't give up . take your time and the traps will produce.
PM me if I can be of any help
Phil