So to find high level eggs relatively stress free, you need 2 people, first goes in at one end, grabs any egg and flys the length of the scar, it pulls all the wyverns out, then kite them into the desert, argy needs 200+ speed. Second can easily dodge the remaining wyverns and take some time to find good eggs while the other keeps the mass of wyverns busy, keeping them in site keeps them from returning to the scar
I got a level 150 lightning egg and I was so excited to hatch the egg...that when I went to put the egg down I accidentally ate it instead. :( ps4 users: R2 ISN'T GONNA DROP THE EGG YOU'RE GONNA EAT IT LIKE ANY OTHER EGG. REMEMBER THIS. LOGIC BEFORE EXCITMENT.