trailer tires

[Cigars n scotch]

I am bringing this back to life because I have several cracks on my current trailer tires and need to replace them before this season starts. I have Trail America ST Radials Load Range C ST205/75R14 currently. I googled the tire and immediately I see different results with the majority negative reviews on the tires. I even found this old thread on this forum from 2011: https://forum.moomba.com/showthread....-America-Tires

So I have a couple questions that I am hoping you folks can help me with:

1. Name a couple of trailer tire manufacturer's that you'd recommend I replace mine with (per that other thread I should look into Maxxis, never heard of them but I will). Also mentioned were Goodyear Marathons, a negative post but nonetheless the local Discount Tire has them for $91.00?
2. Where in the hell do I get these tires replaced at? Does the boat need to be off the trailer and I just take it to some tire place that can order me the proper tires and they'll do the mounting and balancing? This is my first boat, had it going on 4 yrs. now but have never had to replace trailer tires so this is totally new to me, bear with me.

Thanks