I have been working on producing carbon parts for a 250 classic race bike, i used infusion and in total used 14 separate pieces of cloth due to the size and complex shape of the hump on the back of the seat. As it for a classic race bike it will have to be painted as no naked carbon is allowed and the pre trimmed weight is 208 grams.

I have come up with a way of not using connectors at all.

I wind the spiral around the last inch of plastic tube and wrap a bit of masking tape around the joint to hold it. I then cut off the length of spiral tube I need to cover the span. I wrap a 3 inch strip of tacky tape around the the plastic tube and then stick it down so the perimeter of the vacuum bag goes right over top of it. The two tacky tapes seal just fine with a bit of pressing. I get perfect seal every time.  

Fred