Double A side finishing

We produce kiteboards consisting of a PBT skin, eglass, carbon, corecell form, carbon, eglass, PBT skin and ABS side trim. all wet layedup and vacuumed with a doubled sided bag, clamped to an adjustabel A/B mold.
We are considering switching from wet layup to VIP, however, besides the expensive and unflexable RTM/LRTM process we haven’t found any method to have two finished sides or a way to incorporate our PBT skins on both sides. Have we missed some process? Would it be possible to use the same build, use a perforated/scored core and two resin ports at the boot location. Would need to delete that ABC edging perhaps. We would be greatful for any help an information

Is it possible to add the PBT later? Do you part VARTM/RTM and then add the PBT skins in a heated closed mold. Else, you can TRY to score/channelize the core to use is as a flow media and see if that works out. I’ve done carbon sandwiches like that, but not on the size scale you are talking about. (pure vartm, not rtm/lrtm)