Major Boddicker wrote about his equilateral triangle set where he used 1 hole and 2 traps in an equilateral triangle configuration. Tom Miranda wrote that due to logistics he switched the set around and used 2 holes with 1 trap in a reverse(reverse/upside down to Boddicker’s) equilateral triangle set. Boddicker wrote that the change from 2 traps to 1 would show a 30% decrease in catch rate.
I use Miranda’s walk-thru set(equilateral triangle) and there is truth to what Boddicker has wrote about a decrease of catch but I’ve only experienced a 15%-20% miss rate. The miss will occur when a coyote comes in from downwind and doesn’t work the set except maybe to scratch a little at the downwind hole but not really work it for some reason. The baits and/or lures I use with this set are time-proven to be top performers, the “best of the best” in my local so why the coyote acts as I described I don’t know. When I observe this to happen, I’ll place a 2nd trap at the set in an equilateral triangle fashion to the hole that was scratched. So now I have 2 holes with 2 offsetting trapsI I ALWAYS will catch the next coyote OR the one who scratched the hole in the added trap.
There is another example where I will choose to use 2 traps. When I start to get an accumulation of snow, say over 4”-5’” I’ll switch from my Disco dirt hole set to full time the Miranda walk-thru set. Knowing my guiding is pretty much nonexistent I’ve learned that the coyote will circle the set/scents since the set is buried seemingly trying to pinpoint the sources of scent. So, when the snow gets to that depth I drop a trap in directly behind the backing on a drag. This trap that I dropped in will account for better than 1/2 of the catches with deeper snow using this set.
These are strictly my personal experiences and observations where I trap and the conditions I trap in.