Strata committees can be a nightmare with some members more intent on attaining “power” than actually achieving anything. I wonder if the reason other owners don’t want to join the committee as they already know how things are working (not) and prefer to just keep out of it.
In my experience with strata committees and committees in general, you can always use the “lazy” strategy. Create work for the committee that requires members like the secretary to have to use their time to take care of strata work, or keep asking the treasurer to clarify things like expenditure, how contractors were selected, did they sight licenses etc etc. A lot of these power mongers are basically lazy and full of insecurities, give them a bit of work to do make them embarrassed because they don’t know what to do and they’ll scurry away like cockroaches.
Of course you can always ask the non-participant owners join the committee and appoint you to act for them at each meeting (NSW), that way you will hold more votes than just your own.
Your best tool is knowing the legislation and bylaws. Read the SSMA and the bylaws so you can quote them at meetings, it will often shut up people who have used the ignorance of other members in order to gain control.
These tactics have worked for me in the past so might be worth a shot.
I should point out that I don’t see that there is any “Power” in being on a strata committee, it’s just a lot of work, but it’s your best way to protect your property.