pollsters should tell us the polling data before we vote

I think that we should have the polling data on how every constituency intends to vote. Several companies, and the government should be updating this regularly

If we just go and vote, that's a waste of a strategic opportunity.

You need to know which constituencies project mixed results. Then we can decide where to place our vote. The end goal is to balance things out.

Minority government.

e.g. If the results are heading for a Conservative majority, we need to vote for
Labour wherever it's close between the Conservatives and Labour,
or Lib Dem where the vote is close between the Conservatives and the Lib Dems.

It's not enough to know what the parties 'intend' to do.
We need to take charge, by voting strategically.

I've been busy, but I'll look for some stats. The BBC has the 'notional stats' from the beginning of the election period.
Have a look. Use your vote strategically.