"Screw it" (screw in the ground tent stakes)

Dalehelman

I found these a few months ago at Home Depot. I have used lag screws before as tent stakes. Instead of the usual spikes or stakes, but they can be very hard to pull out. These are even better. They have a very course thread design which allowed them to grip and hold better. With a cordless drill they are easy in and easy out. 

ontheroad

great idea, and don't have to use a lot of muscle

DurangoTaB

Looks like 3/8"?