Joined: Sep 2018
Posts: 703
Likes: 199
From: Shenandoah Valley, Northern Virginia.
Bikes: '99 Trek 520, '20 Kona Sutra (FOR SALE 48cm), '21 Simon-Bikes mini-velo and a chromoly-framed folding bicycle with drop-bars and V-brakes, that rolls even while folded.
The only add-able eyelets that I've seen are only for mounting fenders, not a rack.
Assuming that the bicycle does have rear eyelets, can you use a rear rack, with a large backpack secured to the top of the rack as well as to the rear of the seat? I believe the user here by the name of BobbyG has posted photos of his setup on a Dahon 20" Boardwalk. Other people have secured their cargo in this manner as well.