Remember the storm may feel exciting , but will seldom put large strains on the anchor line IF it can stretch.
When*I anchor I really put the hook down good. Sometimes backing down to 1/2 throttle. So I know it 's set good. I anchor* when fishing and sometimes the weather can kick up. Once set I have rarely drug anchor.
*If you know your equipment. don't worry so much about it.
Be sure you have a good set.
Start your motor if you must.
See what happens.
I Have been anchored between two Islands where the tide runs 5 knts. It looked like I was throwing a wake.*
Sorry but I just think you over reacted a little.
I always choose a safe anchorage.
If your anchor drags and you can't get it up.
*If you can see clear water. Drive to it.
Either you make it to the clear or your anchor will reset.
Either way you are off the rocks.
P.S. I use a combination rode 40 ft of chain 500 ft *5/8 nylon rode.
Never used an all chain rode so all this advice could be bilge water.