@fattyflattieDo not despair FF, it's really not an issue. Are there the methy types around? Yup. Are they really a big problem? Nope. I moved here from SA about 2 yrs ago and haven't had one issue with crime since the move. Nothing. During the last 2 yrs I lived in SA (Alamo Fucking Heights for that matter) I had 4 break-ins and had tens of thousands of dollars of stuff stolen.
There are shitloads of Comal Co Sheriff's deputies all over the place 24/7 here. Many live in whatever neighborhood you'd be bound to buy in. To get from Startzville to my house (about a 2 mile drive), you see 5 cruisers parked in driveways and that's not even mentioning the undercover 5-0 that live all around the lake. Get busted in Comal Co and you've got problems. That's all I'll say to avoid CR'ing this thing up. On top of the 5-0 factor you have a ton of retired military here. Sheeeeiiiiit, Fort Sam Houston out of SA has their own resort on Canyon Lake just reserved for them. The lake was created by the Army Corps of Engineers and is still controlled by them. A lot of those folks are also acting or former LEOs and even if they're not, they are watchful, vigilant, and not to be trifled with and the Joe Dirt types seem to understand that (with the occasional humorous exception).
Like most any lake there are some areas of missing teeth and tank top types, but I used to see just as many up Lake Travis and LBJ way. Just like those spots, they are held in check here. It's not a big thing.