Recently separated and in limbo

OK, I thought Marriage was forever, but here I am again separated and heading to single life in my 50's.
Im an engineer, I like to problem solve, tinker in my shed making things or repairing, not much I can't do if I set my mind to it, having said that, I also have done a lot of DIY renovating home, which now selling to start afresh.
I work offshore, usually month on month off, this isn't everyones cup of tea as it has probably caused the strain and failure of this marriage.
Im a non smoker, drug user and drinker... I have no issues with those who socially drink as all my previous partners have.
I do enjoy getting out on my road bike and have a dirt bike too, so anyone interested in those is ideal. I have a 4wd and did enjoy belonging to a club going out and about camping or day trips, keen to start that up again with the right person.
I like to go rabbit shooting, have sort of given up hunting lager animals, as I just like the walk more...
I enjoy fishing off the rocks at the coast.
I like going out for dinner or movie, enjoy the odd motor bike rally and live music, camp over night thing...
I used to enjoy the swinging scene with partner and loved it, but as I got older it wasn't as important as it used to be, but it would be nice if someone shared a similar interest, but not necessary.
I have never agreed that monogamy works or is right, and its a topic for debate with many people, however in a open relationship there is no cheating, nor lies and trust issues, as long as both partners view things the same way: sex is just sex, its not commitment or a relationship. Again open to discussion, I am unsure if id find another partner who shared same view, so will have to accept this may not be workable and I could end up single for life haha. (I am not chasing others all the time or a player, those days gone a long time ago, but I like freedom for self and partner to not be constrained by socially acceptable and pre determined norms)
Sexually, im a voyuer. I