If one is not hired in a senior management position to be part of the Board, something that is very rare, one must buy a controlling interest in the Company to elect oneself. In other words, one must own or control 50% + 1 share of the total float.
That much stock is generally not available to be bought on the open market. And in the US, and I imagine also in Canada, one must register with the Securities Regulators to buy that big a piece.
In the US, one must register with the Securities and Exchange Commission (“SEC”) if one buys 5% of the stock of a company, and must file regularly with the SEC, and cannot sell in the open market without disclosing it.
Being on a Board is not a matter of “fun.” It involves people’s livelihoods, and that is not something to be toyed with.