I've had a couple custom covers made. I store my rig outdoors so a good cover is a must for me. If you store indoors and just looking to make a few trips a custom cover might not be worth it for you.
If you want a custom cover look for a company in your area that makes tractor trailer covers and they will probably have good material. I have several options available in Texas/Oklahoma but that is probably too far away from you.
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