A lot of years ago when I did my B707 training I was told not to set the park brake after an RTO in case the brakes welded together and then the aeroplane could not be moved clear of the runway after all the fuss was over without a lot of wheel changes.
To stop the thing rolling I was instructed to turn into wind as you stopped then just as you came to a complete stop turn the tiller to full lock and with the nosewheel at full travel there was very little chance that the aeroplane would roll anywhere.