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While I have not seen the split bow rail, I do believe It would be worth considering.
On the 2005 170, The solid bow rail is nice looking, and functional while on board; however, at any other time it is in the way. The center span is also too long and not supported as well as it could be.
Delicate would not be the correct word, but it comes to mind.
I have considered trying it without the rail, but as mentioned, storing this awkward shape without damage is a problem.
Good luck, keep trying to find one. If someone out there has one for sale, it might be much less than dealer $$$. The market pond is shallow.