How much time do you spend looking for a job using online tools versus other offline activities?

Can be half and half.
Online tools can give a false sense of security.
But also you never know when you could be headhunted and approached by a company or recruitment agency from jobsites that you have registered with.
I feel more empowered talking to people, their information can lead to more possible 'realistic' opportunities.

Every day but less on weekends

Almost everyday.
Especially at night.

% of the time during the entire week. May be a little more research activities during the weekends.