If you're following the recipe/method correctly, you don't rack to secondary anyway.
The only reason to, would be because bread yeast doesn't flocculate very well and its easy to disturb the lees and get some.of.it back into suspension, making it cloudy again.
The easiest way to avoid that, is probably to make sure the fermenter is moved to where you're going to tac from a day or two before, then carefully avoiding the sediment with the racking cane, siphon 2 gallons off into 1 gallon jugs, from the cleared part, then the last gallon, if you pick up a bit of the lees, you can the deal with it much more easily, and chill.it down to reclear it. Hell, you can even rack the last gallon into 2 litre pop/soda bottles, the first one should stay clear and any sediment would/should end up I'm the last one, which gets chilled and then you could cut the top off the bottle.and rack from above the pity bit of lees and you'd be minimising the racking losses as well.....