You will probably need to add weight to a portable cockpit so that it doesn’t rock, and tip back. But with weight comes the problem of moving the cockpit, so you also want portable weights.
These come on a platform…
You can bolt the platform to a stand…
Then put the weights on the front, and take them off when you want to move the stand, and they have handles making them easy to take off.
Then you end up with this…
Which you can put in front of your TV.