J/30 Class Association Forums J/30 Forum Racing Tools and Techniques Launching Spin from Front Hatch?

So OK 20 years ago when i raced OD we always launched spin from rail ... but when i watched the nationals in Bristol most of the boats launched from the front hatch and many seemed to douse into the hatch as well. some launched from the companionway ala j24 and a few still launched from the rail...
So i have started to launch from the hatch and use the vee berth as a set up for the spin instead of a bag ... not all that bad ... but some of my crew still thinks we should use the rail ... of course they are not foredeck crew. I think I can leave the sheets attached into the hatch and that seems to be a plus ... why have most people gone to the hatch ... is it just because it is easier all around? and if so why do some boats still use the bag on the rail?

Vic