 Dover Athletic have had 17 permanent managers ( excluding caretaker managers ) in the club 's 25 @-@ year history , with Chris Kinnear 's 10 @-@ year stint being the longest . The shortest stay was Ian Hendon who was announced as manager on 28 May 2010 and resigned only 18 days later to join Andy Hessenthaler at Gillingham . 
 Dover Athletic have had 17 permanent managers ( excluding caretaker managers ) in the club <a href='null_genetive' title='1'><mark>'s</mark></a>25 @-@ year history , with Chris Kinnear <a href='null_genetive' title='2'><mark>'s</mark></a>10 @-@ year stint being the longest . The shortest stay was Ian Hendon <a href='null_relcl' title='3'><mark>who</mark></a>was announced as manager on 28 May 2010 and resigned only 18 days later to join Andy Hessenthaler at Gillingham . 
Dover Athletic have had 17 permanent managers ( excluding caretaker managers ) in da club  25 @-@ year history , with Chris Kinnear  10 @-@ year stint being tdalongest . Thdahortest stay was Ian Hendon was announced as manager on 28 May 2010 and resigned only 18 dayz later to join Andy Hessenthaler at Gillingham .