"For those who are on the waitlist and want to stand out, deans of admissions recommend that students write a letter expressing interest and updating the school on any recent accomplishments. Many colleges say they don't advise spending money on a campus visit, given the rather small chance of being admitted."
I agree! Send progress reports or final grades, or a recent graded paper, in addition to the letter informing the college you wish to remain on the waitlist.
Source: Wall Street Journal 4/12/2007
College Data maintains historical lists for each college's wait list. Look up any college to see how many were placed on a wait list last year and how many were offered admission. Example: Hamilton College. Search for Hamilton, then click on the college's link. Locate the 'Admission' tab for Hamilton, then scroll to the Wait List stats. Be in touch with Ms Coddaire to ask how Cheverus students have fared on various wait lists in the past.
links verified 4/2020