Because I had a hangar, the only times I had to tie down my plane were when I went on long trips and to Clinton. I used tie down straps with hooks LIKE THESE [harborfreight.com] . For the ground, I had homemade anchors similar to THESE [walmart.com] that Wayne Westerman gave to me. Whatever you use, make sure the straps/ropes are taut, so the plane can't move with the wind gusts and yanking on the tiedown rings, putting extra stress on the wings and tail.

[Linked Image from visitedstatesmap.com]