There's not really any point, the closest you would get to it is Glitched. The main rule for that one is to actually make the run interesting. No rules would allow you to just use pipe or swing glitches to finish the time trial immediately. Really boring.

Are we able to use an alt account (If we can afford it) for glitched time trial runs, so as not to ruin our proper records?

I think that a glitched category would be perfect for here, to really show how much they can be really be pushed beyond their limits. The only glitch I think that should be against the rules is restarting onto a pipe. Basically ruining the whole point of routing and everything.