I bought an older ('79) Laser that I upgraded to new control functionality. $$ was an issue. Drilled no new holes in deck. Mounted turning blocks to a piece of aluminum angle ($0.50 vs $40) and the cleats on a wooden block ($20.00 vs. $95). Why should this be illegal as I have simply duplicated the function of the upgraded system at far less cost? Also, why the prohibition on mounting compasses on inspection port covers? The boat I bought had lots of ports and nowhere else to put a compass.