My technique is:
Rinse with pure along the whole gutter, fascia and soffit. Wait a minute.
Wash. Wait two minutes.
Turn off water and wipe off drips.
Er, that's it.
I don't think they'll ever be easy and the reason for that is that they use a different set of muscles from doing windows, yet you don't do them often enough to strengthen up the right muscles.
Vin