Wanted: Looking for a A frame or small arch for a zodiac Hurricane 472

[Hurricane4]

Hey, I recently purchased a Zodiac Hurricane 472 and Im looking for a Arch or A frame for it. I'm looking to mount downriggers, VHF antenna, Speakers and nav lights on it. Any help on finding one or plans to have one made would be appreciated. I talked to zodiac millpro but there arch is over $2500.

Thanks