You may want to elaborate on the request a little.

On full size craft boost tabs are used to allow the poor human pilot to move surfaces that are considerably larger than they could move otherwise. Models do not have this issue since the servo is more than adequite to handle the job. Bigger models just use bigger or more powerful servos. It's not an issue.

Yes, boost tabs could be used to allow smaller and weaker servos to move big surfaces but then the hinges would need to be better engineered and the surfaces would need to be mass ballanced to locate their CG's right on the hinge line or bad things would happen.

All in all no, you won't see boost tabs on models other than maybe scale models were they would be faked with a suitable linkage while the surface itself would still just be moved with a servo.