I am currently a senior in high school and have been rowing for a while. If I am interested in walking on to a team in the fall, should I fill out the questionnaire on the website?

It couldn’t hurt. I would follow up by sending a quick email to the recruiting coordinator (usually the assistant coach) as well saying that you’re interested in walking on to the team but you filled out the recruiting questionnaire anyways just so they would have your info and stats on file. In most cases if you walk on to the team as an experienced rower/coxswain (after previously contacting with the coaches while you’re still in high school) you’ll likely get lumped in with the recruits anyways so having an idea of where you stack up against them can be really helpful.