First of all, a trainer is not the place to make these determinations. A trainer is a false environment. However, you should not be sore on the soft tissue so your saddle may need some adjustment (tip the nose up so you sit back on your sit bones). You're in San Diego!!! Take the bike out on the road with a wrench and stop every mile and tweak it. Then, decide if the saddle is right or wrong for you.
I have very few saddle issues on the road, but my trainer??
One reason I actually do love Evil Coach Troy. He makes me stand regularly during a trainer session.
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.