Going around a 90-degree corner will produce a force on the bolt 40% greater than the tension in the rope. (I.e., greater by a factor of the square root of 2.) The force on the anchor will be about the same as if there had not been a 90-degree bend, but it will be slightly less because of friction.
This is nothing to worry about. The forces generated by ...
I made a video about it like 2 years ago:
With a FPV of tying the knot.
Also be noted that the bowline paper has been updated and there's one more variation in there that is safe for climbing called "Harry Butlers Yosemite Bowline" which has been my default go-to lead climbing knot for the past 2 years, i ...
I don't own a grigri (my instructor taught us that They are the Work of the Devil, are Considered Harmful and should be shunned :))
Your problem seems to be that the method of progress capture you're using, with a Prusik, is awkward and inconvenient. A GriGri is a standard tool for this purpose.
And I'm far away from the anchor, I won't be able to reach ...
There's nothing inherently dangerous about different types of carabiners, but each type has a specific application.
A twist-lock carabiner is not normally used on a climber's rack. Climbers normally carry mostly non-locking carabiners plus a smaller number of screw-gate lockers.
The main application I've seen for twist-lock carabiners is in climbing gyms, ...
A rope running across the rotating sleeve of a twist-lock gate can open the karabiner.
There are different types of locking gates on karabiners:
Screw gates: These have a threaded sleeve which is screwed manually to lock the gate.
Twist-lock gates: These lock automatically when closed, and need a quarter-twist to unlock
Triple-lock gates: These ...