Page 4 it says distance from parent hive not important
QUOTE]
Yes it does but this is Tom Seeley's paper on bait hives and the assumption is that you want to catch a feral swarm ... bees that have gone past the initial 'setting down' stage (usually less than 200 mtrs from the original colony) will send scout bees out to find a permanent home ... if there is nowhere suitable in the immediate area they can travel some miles to a home that the scouts feel is appropriate. Even then, when the swarm arrives they can reject the new home and move on.
So ... although distance from the Parent Hive, in this situation, is not important if you have a bait hive within 200 metres of your existing apiary then you have the best chance of a swarm from one of your hives (God forbid !) taking up residence and also the relative proximity of another hive gives you a better chance of attracting a feral swarm or one from someone else's apiary.
At the end of the day .. the Box size, bit of old comb, swarm lure, lemon grass oil and the height off the ground are key components of bait hives but the critical element, to a great extent, is LUCK !!