locking tonneau cover/anti-theft

[jks67ss396]

Guys

My 71 long bed is my daily driver.

I use my bed, but Id like to have a lockable storage so dont have to worry about things walking off.

Ive thought of a tool box, but i think a locking tonneau cover would be better.

problem is even if it locks, if someone wants my stuff, they can just cut through a soft top and get what they want.

I know the pace edwards jackrabbit (for 1000+ bucks) would do what i want, but its $$$$

So i have some questions:

1)Are there soft tops that are lockable?

2)Are the soft tops more than just a "tarp" to where it would take some effort to steal stuff from the bed? or could a knife slash right through it?

3)Do any of you have the folding panel type? Seems like those would be harder to break in to? any feedback?

4)Are there alternatives to the jackrabbit that can had for less money? They make switchblade model for 800, but not for our trucks...just 88 and up

thanks guys