Sep 12, 2014 - 06:52 AM
If there is a cap board and it is 4-6" wide, then you could use the Bird Spikes or you could use 2-3 runs of wire across the top of the board. This wire would be secured at the ends with eye bolts.
This is what I am talking about, and would be my preference. You don't have to use the attachments or springs that this picture shows. Regular wire and eyebolts with tightners will work fine. Available at any hardware store. Advice is free. :-)