Next hockey game you go, you would want to be sure to hang out at the rink after the game. I remember after playing softball games, we'd all go out for pizza and beer.
I would hold off on the operation yard work for the following reasons:
1) H isn't back at the house 2) Yard work is hard & sweaty work...not a light, breezy, or fun activity at all 3) It will not build a positive memory of you and your interactions
The focus is on re-attracting H with light and breezy things/activities. For these activities/actions to work, you need to plant positive and happy memories in H's mind about you. Positive memories equates positive feelings about YOU.
