Hello and welcome to NAFEX.

I have never used a pyramid shaped BC. I find the lower the profile the better chances you will have of them not flying over or by it. It looks out of place and they can see that. Try decreasing the profile and do a dome. 100 ways to skin a cat and that's how I roll

also you will need to weight the trap down. A big hen RT can carry that BC off.

keep us posted on what you trap