Bellhop does support Lyft Line!
Please note, the feed that Lyft provides Bellhop (and all others) only supports 1 passenger in Lyft Line. So you must have the passenger number at 1 for Lyft Line to show. We are working closely with Lyft to improve this. One option you can do if you have two passengers for Lyft line is, go to the and then change the passenger number before final booking.