I tried that and didn't like the way that cranked on the fork and frame, so I made a bracket to install the Ride88 rack in the corner:
Here's the shelf bracket I used:
https://www.amazon.com/dp/B07ZY4RYHL?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1
And the 1.75" plastic dowel (Though one can order...