I’ve never run a trellis/scrog because I don’t like the permanent aspect of it - like such that I can’t get in and inspect real well between plants and whatnot..
It takes more maintenance to get training down and staying in the same spot without it but it’s definitely possible with a little more time in veg.. my dank seeds diary had my black domina that I did a mainline of sorts and ended up with 32 tops/colas that hold in place just fine. Takes a strong plant with a good root base tho too that doesn’t stretch much in flower..
If you got the time to dedicate to it, give it a try