Kathy and John

Wondering what folks use as base under tongue jack & stabilizer jacks? We have looked at wood blocks, plastic lego type blocks, & Anderson jack block. Any recommendations? Also, any advice concerning using a surge protector between RV park pedestal & the Ollie? Our Ollie will have a surge protector built in, but is it worth having a SP at the pedestal? Any recommendations for water filter in line from water source? Thanks!