Well , I'll bite.
A little bees wax on the slides goes a long way to smooth out hoisting and dousing the main .

I favor slides over slugs , unless they are escargot ( but let's not get started on that French thing again ). I have had a lot of slugs break and get jammed in the groove .

I race on a Olsen 25 , ex-SF Bay boat Next Day Air , that has a groove and just a boltrope, no slugs . Very efficient but a pain when it is all on the boom, deck and in the water .

A full batten main with cars would be the way to go if you want a upgrade over the old system . Putting one on an Ariel is the same as any other boat, $$$$$ .

I think it would be more like 120 holes in the mast !