Pete,
Centre sheeting tends to be easier on your back because the load is not a twisting type of load.
You need a heavier boom (2 inch) to take the load coming up from the first sheave the sheet goes through.
The people that I know that do not like centre sheeting mostly have said they don't like the movement that they get from the tramp. Some have commented that they felt more like they were sheeting in their tramp rather than the main when trying to make small adjustements in sheet tension. Not sure if this is real of just imagined. I guess this would depend on your setup. If you installed a centre beam between the main and rear beam like they do on the mossie that problem should be solved. Personally I can't stand the centre beams- forever knocking my shins on them when I had a mossie.

I've not used it on an F16 I can see it would really upset the way I jibe when under spinnaker. But have it on a Paper Tiger and like it there.

Regards,
Phill

I know that the voices in my head aint real,
but they have some pretty good ideas.
There is no such thing as a quick fix and I've never had free lunch!