Good stuff thanks...I'm working with a nikon D7500 and a 17-50 lens, so my camera/lens weight is on the lighter side will likely be exposed...beaches and such is what I'm interested in...I can carry a bit...pretty fit for an old guy...but I also don't want to make it such a chore I don't enjoy it...As I'm going to want to smooth out water I expect that most of my exposures will be at least a couple of minutes so vibration will be an issue...sounds like carbon fiber would be best