Can’t speak for Redsnapper but I can compare a Manfrotto 055 alloy against 3 CF tripods.
The frotto has the flip locks which aren’t nearly as secure as twist locks (see earlier comment). It’s a lot more laterally flexy (primarily down to the locks again), heavier and come winter, very cold to handle.
You also need to be more careful cleaning and drying alloy legs when they’re wet, especially with sea water.
For ball heads, get the highest load rating you can. A quick whizz around WEX shows lighter, yet higher load offerings from other brands such as Benro