A womens size 9 converts to a mens size 7.5; she will want a size 7.5 as these are in mens sizes.
Unfortunately, we do not carry the exact color replacement shoelaces. I suggest reaching out to Altama directly to request replacement laces.
We unfortunately do not have any information on whether or not they will scuff decks of boats that are white, but you can technically use them as a deck shoe.
They are light, but that is very relative to the person and size of the show. There is no OSHA compliance information provided by Altama for these boots.
It will depend on how those fit on your foot. If you wear an 8 tennis shoe size and those fit snug, we would recommend going up a size. Most will recommend going up a size to avoid any issues with wearing thicker socks or a liner/shoe insert.
I'm a 10 shoe and 10.5 sneaker. This has basically been true as I've worn Altama, bates, Matterhorn, Nike, NB over the years. Here, I ordered size 11 and they fit great with a little room at the front.
These are regular width; we do not have wide width available at this time.