I've got all the things needed, but I don't have much confidence I could get it done in mid channel. Just last week I was watching my mechanic do my annual outdrive service- changing the oil, checking the linkage, replacing the boot. He and a very long wrench, and still had trouble breaking loose the anti-theft lock nut. Then the first DuoProp slid right off, but for the second one he had to put a piece of lumber between the rear of the outdrive and the front of the prop and pry. The props shaft looked well greased, but had just one tiny dry spot. There is no way I could have done that in any sort of normal seas, and probably not even in glassy conditions.
And then there is the possibility of dropping parts when a swell hits at the wrong time.
I took a lot of prep damage when I had aluminum props. Since switching to stainless, I've been OK so far. But if I damage one, I'm coming home at idle if that seems possible, and otherwise I'm calling Vessel Assist.