OK, back again.
-perforated film in infusion is a normal way to get a better release between the resin-filled infusion mesh and the laminate. Peelply is not very suitable for that. Way too much adhesion. Peelply is only useful to get a nice textured surface, on which secondary bonding can take place.
In many circumstances the peelply is left in the part as long as possible.
-the peelply is not of a striped version. Although striped versions are (a little) more expensive, how to tell if there is peelply present? Ask the Bavaria boatyard what happens if someone forgets to remove the (non striped, so non visible) peelply. (2 people got killed when Bavaria sailing boats started losing their keels, due to peelply being present between bottom and reinforcement grid)
-spray adhesive. I love it, I hate it. I have a report from Nautical Grip about influence of their glue on ILSS. (which is near to none) but still I like to use the least amount possible. Parts are made with fiber and resin, not fiber and glue.
-Whenever possible, try and avoid holes in the middle of bags. Bring the feed tube in from the side, and bring it to the desired spot through a pleat.
-What kind of release does he use? It takes quite some persuasion before the part left the mould.
-Best of all: THIS GUY IS POKING THE MOULD WITH A SCREWDRIVER !!!