My personal technique is to use my multi-tool to install and remove thru-axles, checking with a torque wrench the first time I install, so that I have a good feel for what it will take if I need to get the wheel off to change a tire mid-ride. If you want a visual reference as to whether or not the axle is moving/loosening, you can use the mechanic's trick of marking the bolt head and frame with a paint pen (auto mechanic...usually race mechanic).