The flu vaccine is a bit different though, as there are so many strains and they just make a best guess each year which to include in the jab. Any SARS-CoV-2 vaccine would be specific and thus hopefully a lot more effective.
I think wearing masks in public will become common, if not de riguer, but the economy wouldn't survive a prolonged lockdown. Jobs like hairdressing, nail technicians, physiotherapy etc. all involve close physical contact.
For punting, I think it will have to come down to common sense and minimising risks, i.e. don't escort/punt if you have anyone vulnerable in your life, check your temperature etc.