[turtle]

Hi Brian,

Wouldn't bother with frc if you are not really going to be doing dynamics or going deep & all you are looking for are increased breath hold times.

Sorry to sound discouraging, but i don't think it'll be your best option.

f

ps. can see where salibandy's comment comes from, as having no interest in depth or even dynamics is very unusual on this forum. Hope your back condition improves.