Be careful, the stress that a turbo trainer puts through a frame/forks are different to normal road riding. All depends on the stiffness/fexibility of the turbo trainer and it's attachment to the bike. Many bikes on turbos move a lot!
Any stand needs to be tolerant of or control the movement at the forks - fore/aft, left/right and rotation/steering. Some forks (ally fork ends into carbon, epoxied in for example) may not like forces in the wrong direction, remember the problems with fork clamped roof rack systems facing the wrong way on the roof?
It is common for turbo trainers to wander across the floor a bit, some designs wander a lot.
May be safer to re engineer the support for the 'puter....