The towering centre-back made his debut at Huish Park, having arrived from Scunthorpe United on loan, but was unable to prevent the Magpies slipping to defeat as former striker Francois Zoko struck in the second half to give his side all three points.
Loach, enjoying an extended run in the first team, kept the scoreline respectable with a series of top class saves, including one to keep out Leroy Lita's penalty.
"It wasn't a great performance and the only player who can come away with any credit was Scott Loach," Boyce said. "He kept us in the game at 1-0, but obviously we couldn't get a decent enough chance to equalise.
"It was an even game and at half-time all the manager said to us was don't concede in the first 10 minutes. He reminded us don't do anything silly, but that's exactly what we did.
"It was a good header by Zoko and it was just disappointing. And what is even more disappointing is that we have not pushed hard to get back into the game.
"The manager wasn't happy, but you can imagine what he said. I will leave what he said in the dressing room. He's not pleased.
“I was frustrated myself because it was my first game for the club and was disappointed in the timing of my headers. But it was just good to get back playing football again."
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