Be sure to remove your stilts before going to bed. You’ll look suspicious wearing stilts in bed. ;^)
Seriously, if the cops have taken pictures, you don’t need to risk anything. Learn how to use your equipment in private so you can use it in stealth responsibly.
Study your Bible. If you are approached by them, simply keep on the topic of God in Scripture and let God lead the way.
Both funny and pointed... nice reply.