Fat and it's presence in the body is something which every fighter must monitor.

Obviously, as most fighters strive to make as low a weight class as they can, it is assumed that fat must be expended from the body in order to make weight.
However, many boxers neglect this and tend to temporarily dehydrate themselves in order to make weight. This practice ofetn results in the fighters performing at under their optimum level and even losing.

I feel that a key to avoiding this problem is to maintain a controllable fat level. By "controllable" I mean that during a boxer's career they should not allow their body fat to leave a range that would disallow them to make weight within one month.

Losing weight is a goal all of it's own. A fighter willing to get the most technically and physically from his or her training camp should not have to spend time shedding weight.
This demands the fighter maintains a certain level of conditioning between bouts and in interim phases.

If you can adopt a fighter's role for a moment. What steps would you follow in order to insure the effective control of body fat and what level do you deem acceptable?

Personally, I feel the key is nutrition. A fighter must eat enough food to fuel growth, development nd the immune system between fights, but must also be responsible in selecting food that will not cause bloat, excessive fat or any health implications which could endanger his or her profession.