Suppose you own a rowboat and enjoy rowing on a nearby lake…

Suppose you own a rowboat and enjoy rowing on a nearby lake in the summer. In June, you are planning to go rowing with two of your friends (three people in total in the boat), and in July, you are planning to go rowing with just one friend (two people in the boat).Will you put in more effort (row harder) on the three-person trip or the two-person trip?