Roof - Using 5.2mm Laun - best way to apply

howdy-
Well I am at the stage of skinning the roof and picked up two pieces of 4x8 laun ply. Since one sheet won't completely cover the roof I will have to use two pieces. My thought is to use a full sheet attached at the galley end and glue and staple it - and then finish off the rest with the remaining piece. Or would I be better off starting at the tongue end and working up to the galley? (This gives me a less visible seam)
Also what is the best way to secure the ply? I have looked at various personal galleys and have seen both wood screws and staples.
Thanks
Bill
Well I am at the stage of skinning the roof and picked up two pieces of 4x8 laun ply. Since one sheet won't completely cover the roof I will have to use two pieces. My thought is to use a full sheet attached at the galley end and glue and staple it - and then finish off the rest with the remaining piece. Or would I be better off starting at the tongue end and working up to the galley? (This gives me a less visible seam)
Also what is the best way to secure the ply? I have looked at various personal galleys and have seen both wood screws and staples.
Thanks
Bill