Answer the question at the end by quoting:

The Manchu (Manchu: manjU; Mollendorff: manju; Abkai: manju; simplified Chinese: Man Zu ; traditional Chinese: Man Zu ; pinyin: Manzu; Wade-Giles: Man3-tsu2) are an ethnic minority in China and the people from whom Manchuria derives its name. They are sometimes called "red-tasseled Manchus", a reference to the ornamentation on traditional Manchu hats. The Later Jin (1616-1636), and Qing dynasty (1636-1912) were established by Manchus, who are descended from the Jurchen people who earlier established the Jin dynasty (1115-1234) in China. Manchus form the largest branch of the Tungusic peoples and are distributed throughout China, forming the fourth largest ethnic group in the country.
The early phase of Manchu clothing succeeded from Jurchen tradition. White was the dominating color. To facilitate convenience during archery, the robe is the most common article of clothing for the Manchu people. Over the robe, a surcoat is usually worn, derived from the military uniform of Eight Banners army. During the Kangxi period, the surcoat gained popularity among commoners. The modern Chinese suits, the Cheongsam and Tangzhuang, are derived from the Manchu robe and surcoat which are commonly considered as "Chinese elements". Wearing hats is also a part of traditional Manchu culture, and Manchu people wear hats in all ages and seasons in contrast to the Han Chinese culture of "Starting to wear hats at 20 year-old" (Er Shi Shi Guan ), . Manchu hats are either formal or casual, formal hats being made in two different styles, straw for spring and summer, and fur for fall and winter. Casual hats are more commonly known as "Mandarin hats" in English. Manchus have many distinctive traditional accessories. Women traditionally wear three earrings on each ear, a tradition that is maintained by many older Manchu women. Males also traditionally wear piercings, but they tend to only have one earring in their youth and do not continue to wear it as adults. The Manchu people also have traditional jewelry which evokes their past as hunters. The fergetun (fergetUn), a thumb ring traditionally made out of reindeer bone, was worn to protect the thumbs of archers. After the establishment of the Qing dynasty in 1644, the fergetun gradually became simply a form of jewelry, with the most valuable ones made in jade and ivory. High-heeled shoes were worn by Manchu women.

When did they start wearing red tassel hats?

Wearing hats is also a part of traditional Manchu culture, and Manchu people wear hats in all ages and seasons

IN: Forest "Evy" Evashevski (February 19, 1918 - October 30, 2009) was an American football player, coach, and college athletics administrator. He played college football at the University of Michigan from 1938 to 1940 and with the Iowa Pre-Flight Seahawks in 1942. Evashevski served as the head football coach at Hamilton College in 1941, Washington State University from 1950 to 1951, and the University of Iowa from 1952 to 1960, compiling a career record of 68-35-6. Evashevski's 1958 Iowa team went 8-1-1, winning the Big Ten Conference title and defeating the California Golden Bears in the 1959 Rose Bowl.

"People in the Midwest are my people and I wanted to be back among them...And, of course, I don't have to tell you what I think of Big Ten football. It's the best in the country." With those words, Evashevski left the Palouse in eastern Washington to become the University of Iowa's 19th head football coach. Evashevski nearly took the head coaching job at Indiana University, but Fritz Crisler urged him to consider Iowa. He felt that it would be easier to attain statewide support at Iowa than in Indiana, where Purdue University and the University of Notre Dame shared the spotlight. Evashevski was familiar with Iowa City from his stint with the Naval Pre-Flight School. Crisler was the man who recommended Evashevski to Iowa's athletic director, Paul Brechler. Crisler did warn Brechler, however, that Evashevski was "a tough, stubborn Polack, and you might have to put the reins on him." In 1952, Iowa football had only had three winning seasons in the previous 16 years. Iowa had also gone without a Big Ten Conference title for three decades. A United Press International story named three football programs in 1952 with new coaches that would struggle to ever be competitive: Iowa, Indiana, and Pittsburgh. Iowa's first two opponents in 1952 were Pittsburgh and Indiana, and Iowa lost to both, starting the year 0-2. But Evashevski knew the Hawkeye program could be resurrected. When he came to Iowa, Evashevski was asked by a writer, "Do you think Iowa could ever really have a consistently winning team?" Evashevski snapped, "Why in the hell do you think I took the job?" Afterwards, a photographer noted, "I think that man truly believes he's the savior of Iowa football."

what made him a good coach?

OUT:
a photographer noted, "I think that man truly believes he's the savior of Iowa football."