All of the suggestions are good. I've always tried to put myself into a position where I can have the best chance of winning the safety battle in the end--- not just shooting a 100% guaranteed shot where the incoming player has no shot (that might give him a gimme shot to put me in a bad spot).
I like to take the risk, say 75-80% success rate, to get frozen to the bottom rail (below the rack) right out of the gate by shooting the 5 up table and locking (or very close to) the CB to the center diamond under the rack.
The opponent is then forced to tick the 1, and repeat the position; however, he/she has the chance of scratching, rolling too far or not far enough. The 5, many times, gets bumped into a position that can be made with an over-shot roll off the 1... setting up the possible break on the remaining ball.
Although bumping the 5 up table and drawing into the rack isn't bad as it saves the day for the time being, I think bad stuff can happen two moves later. Your opponents next shot will undoubtedly be the gimme-tick to freeze the CB to the end rail (where I would want to be to begin with) and that forces you to tick the 1 to repeat the position. Now, the order is switched up--- maybe you roll too far, not far enough, etc.
Also, by drawing into the rack, if you don't suck it into the hole -- you can sell out on the 5 often with an easy shot into either corner-- depending on how it's hit. Or, by barely drawing it back too far (barely below the rack), you setup a bank shot that even a non-banker would try because it's as easy a bank as banks come and it provides a natural setup for the break shot.
NOT SAYING ANY OF THIS IS RIGHT/GOSPEL--- Just letting you know how I think.
The opponent I mentioned earlier liked to shoot the 1 and spin two rails into the BASE of the rack-- leaving both open balls available as possible shots to open the rack or leave the possibility open that he'd have those available. This, of course, could lead to problems later. My move is always ticking the CB back to the position I mentioned earlier and now the opponent is forced to tick the corner of the rack and repeat the position which could sell out on either loose ball or create an unwanted loose ball which is doom.
As I mentioned--- this is all philosophy and the tightness of the table plays a strong part in how you play safeties. On a tighter table, I'd let Bob shoot that 5 to the bottom right corner for $20 / shot just to see what happens. Might bust me, maybe not - but it'd be fun to watch (I mean this totally in jest).
So this leads to my discussion point-------->
For safeties--- in similar scenarios--- do you strive to create distance to the rack and kiss the rail (lower %, say 75-80%) or do you strive to take the 100%er and just lock the CB to the rack immediately??
I'm asking because I really don't know the RIGHT answer--- I just know that I always strive to kiss that bottom rail and be in a better position than my opponent in round 2. If there's an open ball up table and you're kissing that bottom rail--- have at it. Most non-pros miss that shot on a 4.5" pocketed table than make from that position.
What does everyone else think? Please understand, I'm NOT knocking how anyone plays safeties here and there are no right answers without knowing the exact equipment, your opponent, etc. I think it's philosophical based on your aggression level.
Dave