I used to do that when practicing in the swimming pool here
Not the best swimmer back then, not much improved compared to the missus who literally could be a fishwife, the way she effortlessly glides through water out toward open sea, the depth of which gives me nightmares just thinking about.
Each lap took me closer to an imagined rock I picked from a holiday.
Eventually managed it the next year .
On a not dissimilar note, when I began exercising post DX, I ran on the spot in the house ..boring but music & a will, I enjoyed it.
A quick Google showed others used 1st person videos of runs at beach, forests etc.
Velcro strips, and the Kindle fire showing vids and I was running in Barcelona & on the promenades of the words best beaches ..much better.
Who needs pelaton when you got guile & imagination..