Our Pennsylvania bobcat and fisher season opens soon.  
I took a break from setting steel the last couple years.  
I'm looking to make bobcat and fisher sets. I really don't want a fox or coyote clogging up a set lol.  
I plan to construct cubbies.    
I was wondering what the rule of thumb is for the size of the opening.  I don't know that I will make any walk throughs...but I think the opening still has to be fairly good sized to make it look inviting.  Bait/lure/attractor in the cubby.  Trap guarding the opening and guided pretty hard.  
Would it be worthwhile to get some sort of fencing?  A roll of chicken wire or something?  Any recommendations on what to use? If anything?
 Could cut off enough to make a U shaped tunnel and use natural brush to close it and leave the front open.  
The weather is always tough...rain/snow/freeze/thaw etc.  I think cubbies will help.  Nice dirt holes often turn into small ponds and then blocks of ice.  
I have lots of options for keeping the trap running..peat, waxed dirt, glycol, screens, trappers caps, poly fill etc.  I have learned the hard way that is critical.  First couple seasons I didn't know any better and struggled and was digging traps out of frozen ground.  
If anyone has pics of using fencing or something for cubbies id love to see them.  I checked the archives and didn't find much but I know I've seen em before...