Adaptable staples

The soil in my garden is a mixture of cement, concrete, rocks with very little compacted earth.
New housing on the rocky soil .I break in half through the middle much staples
(Relatively easy hand) because I could rarely drive the 20cm 2 points without bending ..
I therefore plunged through the broken side (~ 10cm). They were essential because I live nearby
Sea where there is a lot of wind and my canvas should be maintained.
These staples are helped me.