I printed the Spydacopter thick leg (which is a remix of the Crossfire QUadcopter leg) in PLA.
But sadly, even with 50% infill the material is to brittle and the feet broke of almost instantly on medium rough landings.
I remixed the arm to be more stable and am experimenting with it right now.
It could also be a good idea to ad some rubber or foam under the foot to dampen hard landings.
good news is, the foot is indeed much more stable and wont just break of.
bad news is, the leg breaks somewhere else now. a few minutes ago, it ripped the whole foot apart. have to rethink this.
check out this arm with replaceable foot:
I print it in PLA with 50% infill.
You might experiment with 33% infill or even less.