I must have had around 15 (give or take) colony ships running around...OH...they had nowhere to go...'cept for a few smalls and tinys.
No matter the carriers didn't have fighters...they could have loaded them in a few turns. And no need for you to go on the offensive anyway...put the fighters on the warpholes (you were in every system I needed to go through to get out to the "frontier") and dare me to send any colony ships through without adequate escort. Meanwhile, you continue taking the other two thirds of the map.
Even I can see a 30-turn game with the same rusults.
NOW...I expect you to surprise them on the hill! Good luck
.