Please welcome Eyoyo Underwater Fishing Cameras.https://amzn.to/3siEgXn
Try using a Jig saw with a short blade
....or a Dremel tool if you have one.. Use the fiber cut off wheel.. John
smitty0312: Are those 1" Pipe Straps? What is the black band for near the top edge.... Velcro?
I like these ones:https://www./store/product_info.php?cPath=23_73_57&products_id=52&osCsid=02973879857715654f29c91a5e0f4190