https://trc-images.nl/collection_images/hires/2018/2018.0871_2.JPG#\\TRC-SERVER\TRCSharedWork\TRC Database\collection%20photographs\2018.0800\2018.0871_2.JPG#
There are two ties at either end of the net which suggests it may have been a hat net.
https://trc-images.nl/collection_images/hires/2018/2018.0871.JPG#\\TRC-SERVER\TRCSharedWork\TRC Database\collection%20photographs\2018.0800\2018.0871.JPG#
Piece of shaped large mesh net in black.