NEW HAVEN, Nov. 16--Cambridge visitors at the Yale Bowl Saturday will find themselves unintentionally and irretrievably a part of a ticket allocation system designed to achieve a maximum of sales volume with a minimum of student inconvenience.

The revised plan, put into effect after 1950, replaces the former, home and visiting sides of the Bowl which Yale alumni and cheering section" sides. The cast side "cheering section" now includes the faculties and students of the opposing schools plus the sun in the second half.

Under the old plan, Yale Athletic Association officials found week after week that the home side was filled from end zone to end zone, while across the field spectators sat only between the 30 yard lines. Hence with the former system, very few good seats were available to Yale alumni, and most of the old grads refused to make the long trip to New Haven to sit in bad ones.

Alumni Have Whole Side

Now, however, with an entire side to themselves, alumni football ticket sales have shot way up Yale. A recent poll showed 87 percent of the old grads to be in favor of the revised 'system.

Part of the campaign to entice alumni to the games is waged with a colorful advertising brochure, which informs readers that "there are eighteen miles of comfortable seats in the Yale Bowl, the only large stadium in American which has back rests on every seat."

You'll find that each seat is numbered to assure you ample space," the pamphlet goes on, and one can be sure that this accommodation is particularly appealing to a rich, fat, old Eli alumnus.

Visitors Worse Off

Obviously as in 1951, the seats available for Harvard fans this weekend will include just those on one side of the 50-yard line on the "cheering section" side. There is nothing that a visiting university can do about this however, except to retaliate with a similar system when Yale comes to town the following year.

Between the visitors on one side of the midfield stripe and the neighboring Eli students, Y.A.A. Ticket Manager Jim McDermott places what he calls a "gentlemanly buffer zone" of Yale faculty. He admits, however, that his precaution is unnecessary; the Ivy Group is not "school-boyish," he finds.

Hence the Yale students as well as the visitors suffer from the revised plan, but McDermott reports, "We have little or no complaint from the undergraduates." And what protest there is will undoubtedly soon die a natural death, for only the Class of 1954 was around in the good old days, when Eli students were on the shady side of the street.

Procurement Easy

But if the Yalies are short-changed in seat location, they do receive a real accommodation in seat procurement. In contrast to the H.A.A., where students sometimes have stood in line all morning, the Y.A.A. ticket manager declares. "Nobody here has ever waited for more than five minutes."

The Yale system is simple and works like this: at the start of the football season, each student receives a set of special envelopes, one for each game. He them fills in the blanks on the outside of the envelope, printing his name, class address, and number of requested tickets.

Inside he encloses a coupon from his student season book, or cash, or both. The Eli then hands his weekly envelope into the Y.A.A office before the deadline, 17 days prior to the game; the staff is frequently lenient about accepting late orders, however.