Jayapataka Swami:  Part of preaching is  to hear what others have to say, what they are thinking, and then accordingly to give them some way so that they can engage their thoughts in Krsna’s service. They tell us for fund raising, rather we should be friend raising! Then by making friends we will automatically get funds. So same idea to make friends with the people who visit and then engage them in different services of Krsna, whatever they like to do. Srila Prabhupada was gauging to find out what the people liked to do and then give them that service.