The rules specify equipment must be installed in a manner per its listing, and there are at least four nationwide codes that cover the attachment of solar panels. In California I would guess there are more, stricter codes (e.g. seismic).

Even if you managed to make the panels movable, this would fail 690 of the NEC:

    690.31 Wiring Methods
    (A) Wiring Systems
    All raceway and cable wiring methods included in this Code, other wiring systems and fittings specifically listed for use in PV arrays, and wiring as part of a listed system shall be permitted. Where wiring devices with integral enclosures are used, sufficient length of cable shall be provided to facilitate replacement.
    Where PV source and output circuits operating at voltages greater than 30 volts are installed in readily accessible locations, circuit conductors shall be guarded or installed in Type MC cable or in raceway. The ampacity of 105°C (221°F) and 125°C (257°F) conductors shall be permitted to be determined by Table 690.31(A)(b). For ambient temperatures greater than 30°C (86°F), the ampacities of these conductors shall be corrected in accordance with Table 690.31(A)(a).0