As they said above to keep lures / bait in the water . There aftco roller clips . You can put them on any boat you just need to figure out how you want them installed. Lots of people will just you heavy leader and a off shore snap swivel and wrap around a rail or something.only plans are to uprated electronics.
My arch was installed like yours. So after I had power lines hit where the radar was , I had to modify it. I'm so glad I was backing into the area, and checking for that clearance. There's probably nothing like a Blackman lightning rod. Lol.
So I installed this. Undo the top bolt and the arch rotates down. I utilize a kickstand type bracket for traveling with the arch down.
You can loop them through the hole and use a offshore a nap swivel. Then remove when your not using them . Or just use a rubber band . That's what I use to use . When I bought the blackman I found 4 clips so I just made use of them . I really don't troll a lot either .