Having played around with welding loops in a decent number of sink tips, here's my opinion....BTW, nothing is more ridiculous than someone saying, "I've done xxxx for xxx years" to sound like an expert, which most are not,so yes, I see the irony in my statement above....but I still laughed when I wrote it cause an expert i am not...lol. anyway, I've found Airflo lines to heat weld the easiest (by far), followed by SA (takes a bit more trial and error) and lastly, if it's Rio, don't bother....in fact, just toss the line and get a new one.
Even the Airflo took some experimentation with the heat gun & shrink wrap (which you cut and peel off when finished for a cleaner look).
Outside of that, Albright knot has never failed at that junction...nail knots have (for me). They can be a little bulkier than you're used to, but that can be alleviated by using some UV knot sense, then looping that mono....smooth as butter.
For trouts, it doesn't matter much....