A big reason why a lot of HP monos do not have wing rigs is because they carry mast head kites and need the support of upper diamonds. To many $$$$ have been invested into developing their rigs to start from scratch with a wing mast.

Some monos have carried wing masts for some time such as the NS14 and MG14 which is an NS with spinnaker.








A wing mast was also tried in the NZ R Class skiff (simular to 12 foot skiff) and showed good speed but I think they strugled to keep it facing skywards.