Depending on what brewing method you are using you shouldn't have much crud anyway.
For example I do full volume BIAB in an urn and this is my typical trub:
reducetrub 7.jpg
Obviously that's after draining to cubes, so I only get clear runnings into the cube, then run off the rest into a jug and let it settle.
The clear wort can then be poured off into a pan and boiled, either with the late hops as posted by others, or used for starters.
I've put three steps into practice to reduce trub to a minimum.
- Slow hoisting of bag to form grain bed
- Hop "sock" to remove nearly all the solid hop material after the boil.
- Final "flash" boil with lid on, to sterilise the headspace when, as a bonus, most of the trub rises with the boil then sticks itself to the upper sides of the urn, just before it tries to froth out of the lid. This step also allows the wort to cool safely to below 80 degrees for cubing. You can see the trub ring in this photo, most of any remaining hop solids also deposit here.
I only do this when I intend to pitch the next day as, of course, 80 degree wort isn't going to completely sterilise a cube.
On the other hand with proper cube cleaning and sanitation this shouldn't be a worry in practice, my last infected cube was over 4 years ago.