Anyone using/planning to use kayak carrier attachments with the Whispbar? I had asked them and they said Kayak carriers WB-400 and WB-401 will be available starting early May (not sure what the difference is between 400 and 401). Both seem to be only able to carry ONE kayak which is a bit of a bummer. I would've thought with the width of the Model S carrying two should not be an issue? Whispbar WB401 Saddle Roller Kayak Carriers 8054001 - RackWarehouse.com
The WB400 looks like it will fit two kayaks. The 400 stores them more vertically compared to the 401 which stores flat. WB400 Whispbar J-Cradle Kayak Carriers 8054002 - RackWarehouse.com
That would've been great but doesn't look like it - from the description: "The WB400 J-Cradle Kayak Carriers carry one boat up to 80 lbs."