so, i have 3 boars, currently in a 2X5 and am planning to expand to 3X5 this weekend. no i'm a little worried, because it sounds like 3X5 is hard to clean? and since i'm asking (sorry of i'm hijacking this- but my question is on topic!) i have the 2X5 on a 6 foot folding table. i really don't want to do the base of grids. can i just use some plywood on top of the table with the 3x5?