How much do you weigh? What type of bike do you ride? What is your riding style, do you bash int any and everything, or do you try to pop the front wheel and navigate around stuff? All of those questions will help you determin appropriate tyre pressures for YOU. As Reckless said, one of the big benefits of running tubeless is the sbility to run lower pressures without flatting, but you have to watch out for burping at too low pressures.
Just for reference, I weigh about 180-185lbs geared, right now ride a 29er HT w/ 120mm fork, 2.2" Nevegal F /2.0" Michelin XC A/T R, Stans Flow rims, sometimes ride smooth sometimes bash and run pressures ranging from 24-30 PSi in the rear and 19-25 PSi in the front. Our island is a coral based island and has loads of nasty coral everywhere and I've not had issues running these pressures.
best advice, is to take a good pump and guage along with you and try different pressures and see what works best for you, but would defnitely suggest you drop to lower than 35 PSi unless you're over 250lbs as your tyres aren't then really getting the chance to deforms and contour to the trail, so of course you'll not have great traction.