OK, I've just read some of your earlier posts, and decided to edit my reply.
There are rogue locksmiths, just as there are rogue plumbers, electricians etc - every trade has them. Obtaining quotes from a number of businesses will obtain a fair price, and going by recommendation will get you an even better service.
Going equipped - ie carrying picks/bump keys will get you arrested unless you have a legit reason for carrying them.
There ARE bump proof cylinders on the market. You'll either pay a fortune for top-end ones, or you can add a substance that prevents bumping (pickbuster) - take a look on
www.theinstituteofcertifiedlocksmiths.org for more info.
I hear what you're saying, but you are approaching it the wrong way by promoting the use of bumping, drilling etc. I know it's out there on the net, but do we really have to advertise the fact!.
With regard to your patio doors, I'm not aware of any blanking handles, but you could always fabricate a cover out of pvc, and insert the half cylinder as you mentioned. Bit pointless though, as the door can still be easily bypassed using other methods - destructive I mean. No burglar is going to stand outside bumping/picking/drilling, when they have other (quicker) methods.