Maybe i'm wrong but there doesn't seem to be much to engage with unless you are a die hard strategist who wants to pore over data sets and plan weeks and months ahead.
The big difference between PP1 and PP2 is that in PP2 it's absolutely okay if you aren't. In PP1 almost all possible moves were bad, so if you didn't follow the centralised spreadsheets and strategies you'd probably just hurt your own power. In PP2 all possible moves are good. Some might be better than others (or more urgent than others) but there's not really any such thing as a wasted move.
So ... for your examples
I also dont want to come back from the black after a few weeks and hand my data into a port that screws with the work that another player has spent that same few weeks setting up
You essentially can't mess up other people's work this way - at least not on your team! Exploration is a reinforcement action, so you'll strengthen any system of your Power by handing data in there.
- if it's a system no-one else cares about, it probably needed a bit of reinforcement so why shouldn't you do it?
- if it's a system other people have already been reinforcing, you've just saved them a bit of time. There's not really such a thing as over-reinforcing a system (it's technically possible but you're not going to do it with a few weeks of exploration data)
You might potentially mess up someone from another team's plan to undermine that system and kick your Power out, of course - and if you don't want to do that then certainly Powerplay might not be for you, it is ultimately a competition - but you're not going to do anything to harm your own team.
or hand my bounties in at a station then realise that only a few jumps away i could have helped my power gain control.
Bounties don't do anything for Powerplay when handed in, so do that wherever is most convenient for you - instead, they do something when you obtain them. As with the exploration data, it doesn't really matter if anyone else on your side is working on the same system - either you've helped someone else on your team finish off that system faster, or you've put some effort into another system which might become important later.
And it's also okay if not everything you do helps your power very much. I've been doing some stuff about a hundred LY away from my Power's territory the last couple of days - trade, bounties, missions, etc. A little bit of it
did get a few undermining merits on the systems I was in, but that wasn't why I was doing it. You can absolutely dip in and out - today you're going to reinforce this system of your power and undermine the nearby border systems of other powers ... tomorrow you're going to go off to bounty hunt in the Pleiades because you like the view and it's no big deal that it doesn't help your power.
For various reasons, I'm not in contact with any of the major player groups which support my Power. I've got my own plans - which certainly have to be smaller scale, because I can't do that much each week on my own - and can just put a little bit towards them each week. Or if I feel like doing something else, I can ignore them. So long as I accept that they might become obsolete at some point because if it takes me six months to do them the wider strategic situation might change too much - and that if a large group from another side notices, I'm probably not going to succeed and will need to pick a new target - I can just get on with that and not worry about what the big groups are doing.
Similarly, Powerplay is absolutely designed for - and in my opinion benefits strongly from - people just doing a bit of random stuff here and there: reinforce this system a bit, undermine that enemy one, put a few hundred merits into acquiring that one. It adds just a little bit of noise and movement into the wider galaxy
so that it's not just the big organised groups spreadsheeting things out and agreeing to carve up the galaxy between them.
Elite is a very broad game with many activities that i do enjoy so why should i choose one that alignes with a particular power.
It's not
that important - all activities help all powers, it's just that you can get a bonus if you're doing your power's favoured activities. But it's fine (and in many cases important!) to do activities where your power doesn't get that bonus, because they still generate points.
One of the nice things about Powerplay for me is that because so many things can count for points, actual multirole ships become valuable - you do a bit of cargo hauling, but you fly something defensible so that you can hit the pirates who come after you for bounties, then you recycle the profits from that into a donation mission before switching over to raid an Odyssey settlement for data and goods and kill a bunch of enemy power operatives who come after you for that, and at the end of it you've got some extra rewards and helped your Power's position in those systems.
I stayed well clear of Powerplay 1 for all the reasons you've given - and when Powerplay 2 was announced, expected to be doing largely the same to that too - but Frontier managed to surprise me and come up with a system which works really well for lone agents like me as well as big organised groups.