I'm looking for a basket that fits completely inside the keggle, and fills up as much volume as possible.
I have done a few batches now of BIAB with my keggle.
It works fine but it is kind of a mess. Getting the bag out of the keggle, without it spilling wort all over the place is a challenge.
I have a 7.5 gallon ss basket that fits perfectly to the top of an ale pale.
My usual routine is to use a pulley hooked up to the ceiling. My wife pulls on the line, while I finagle the bag out of the keegle and then drop it into basket that I have. This then drains, into the ale pale, and I can use a pot lid to squeeze down on the bag and get as much wort out as possible.