Scotland already has a trade surplus, is the only part of the UK to have had one over previous years and it’s growing. This makes Scotland a better long-term economic prospect than rUK. See:
England ran a massive trade deficit in 2014 and 2015 too. Scotland had an even greater surplus in those years. Who knows how much we’ve been subsidising the UK balance of payments and reducing debt over the years?
Insider magazine has reported that one third of Scottish firms had an export boost in the last three months which they attribute entirely to the fall in the value of the pound. I suspect that’s unfair to the industries making these increases through the production of ever higher quality goods and, in tourism, through the growing appeal of Scottish destinations. The Royal Bank of Scotland, in the article, predict this growth will continue into 2108.