New Trailer help w/racks

[Watson's Landscaping]

hey guys the trailer should be here next weekend and the racks got here on Friday. My ? is I bought the Xtream trimmer racks and there blower rack so how did you guys mount them to the inside of your trailers, I think there bracket is going to be to wide to get all three screws into the wall studs.
any pics or help would be great