Yes, I agree with you. I was always of the opinion that humans in the Americas predate Clovis by thousands of years. For me, the coastal migration theory, taking the water route, seems like the answer.

There are even some scientists who want to push the initial date of the peopling of the Americas even earlier, 30 or even 40 thousand years ago. There are some finds in caves in Mexico with some pretty old dates. However, the dating is still questionable, so these finds are not really the same smoking gun as the White Sands footprints.

Coxcatlan:

https://www.cambridge.org/core/journals/latin-american-antiquity/article/new-ams-radiocarbon-ages-from-the-preceramic-levels-of-coxcatlan-cave-puebla-mexico-a-pleistocene-occupation-of-the-tehuacan-valley/F4C32FB10E73D660CB7D9B44E2C29A72

Chiquihuite:

https://www.science.org/news/2020/07/were-humans-living-mexican-cave-during-last-ice-age

https://www.nationalgeographic.com/history/article/surprise-chiquihuite-cave-discovery-mexico-double-peopling-americas

If dates as far back as 30 thousand years ago are correct, then an initial inland migration was also possible:

" But more than 30,000 years ago, those ice sheets had not yet reached their full extent, Lesnek says, opening up the possibility of inland migration."

https://www.sciencenews.org/article/cave-mexico-stone-artifacts-humans-americas-early