so what exploritory surgery did you perform? my glass over the foam fill holes was/is cracked too. i just kinda/sorta filled them in a bit with epoxy to reseal mine. i am worried about water intrusion from this point too. but like you, my boat don't seem heavy and performs great too. so i also have left well enough alone too. so far.
agreed. another point of possible water entry. but any water should drain back down to the bilge. assuming the tube under the inner liner isn't spent. which in my case with a cloth covered tube (later years i think used a metal instead of cloth which may be more durable i would assume). i wonder a lot as to its integrity. anyways. from the sound of it. you've plugged the tube that is intake from the blower? where will you intake from now? just from the bilge itself. i'd be worried about fumes that don't get sucked up as the oem designed it to do. i don't know. maybe AristoCraft can shed some light on this. the routing of the cloth tubes and the reasons for there locations are a mystery to me.
Here are some more pics of my platform project. I have also included a pic of a tool I made. It was original made to stir paint, but I have found it shreds foam with ease. I just keep the shop vac running and it disappears like magic. The back up plates are made of 0.150 thick stainless steel. I was able to carve access on the port side without cutting a hole as there is a gap over the top of the fuel tank.
). thanks for the documentation of how you did that. 
