these are my little guidelines i use for assist:

in general, when starting on flat roads, i use assist at about 4-5 bars until i reach 2-3 mph below my cruising speed, then backoff slowly and ease into the cruising speed.

when going up short hills, i use about half the bars for assist, which i think is a good balancing point - once i reach a temporarily flat area, i backoff the assist and put it back on when the grade steepens again.

finally when going downhill, i try not to use any assist at all, and try instead to get as much regeneration as possible.

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i'm open to any suggestions to change my assist strategy