I tried researching the candidates to weed out the extremists and gay haters. Most of them have websites you can find if you google "candidate NRA board (name)". There is also a website called
nraontherecord.org that has a collection of controversial quotes by past and present NRA board members including anti gay slurs. Of course, new prospective board members will be a blank slate.
Many NRA board members are very conservative across the board, and some hate gays, but when they speak they speak for themselves and not the NRA as an institution. Basically, I voted for the sportsmen and women (aka the 'Fudds') who are more about shooting sports than a political agenda.
Hope this is some help.