We looked at various cap and cover alternatives for our 2003 Silverado crew cab. We had a soft tonneau cover, which was easy to roll up, but it provided no security (it would have been easy to cut and the tailgate is non-locking).
We were looking for a cap or cover which could provide some degree of security, and yet could be rolled back or easily removed if we needed to haul something large when not camping. A major criterion was not limiting visibility out of the back window, which was hard enough to see out of as it is when backing up without the trailer.
While camping in Tucson at an RV park, we noticed a hard rollup cover – a "Bedlocker" brand. It is expensive and there are several choices, but it met our needs exactly. We selected the plastic-coated aluminum model, with an electric roll-up feature, and an optional lock for the tailgate. The lock is a rather simple device that could be easily overcome by a knowledgeable thief, but does provide some degree of security/deterrent – and certainly is better than none at all. The lock functions with the remote key lock of the truck. Also, the cover can secured in any position (ie, partially open if needed).
Thus far, we are very satisfied – both with looks and functionality. The only downside is cost – a little over $2,000 installed. Here is the website – with a picture of the cover in motion:
Pace-Edwards
George & Pat