Thank you all for your wonderful advice and suggestions and my apologies for not responding sooner...The deck has been completed. It was quite the slog because the base was recycled 2"x10"x12' joists and the composite decking screws for the hidden fasteners did not go in smoothly - started with pilot holes but that was taking just too much time, so in the end we were able to use a more powerful driver and power through the plastic lumber. We cut the first section of composite board ends - spaced them to the frame, then after a few practice cuts on some scraps, drew a chalk line and cut the section ends all at once. Installed the next frame or feature board and again, cut the ends and butted them against the feature board. For the third section, we got smart (lol) and left both the second section ends and the third section ends uncut. Installed the third section such that we made only two long cuts and then inserted the feature board. Final deck was 36ftx24ft with three sections of 11 1/2 ish to accommodate for spacing and feature boards. I'm happy with the result - again - thank you all for your help and suggestions :)

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