Screw all those ideas. Just go and get a codebreaker(like 10 dollars maX) and u can use that as a gameshark/PAR/Codebreaker plusit boots copied games w/o a modchip and I have never had a game not boot for me. That includes most the DDRs.
Can it also be used with Chrono Cross? (When you have to change discs in Chrono Cross the game doesn't allow you to save before the swap, power off and boot from the second disc like most games.) AFAIK no cart can do this, which is one of the primary reasons I installed a modchip in my Playstation. Oh if Sony had only had the sense to separate the copy protection and region information like Sega..
A modchip is easily the best solution. You can get the Onechip for peanuts now and it boots every single game directly, import or backup. Plus, seeing as I'm in PAL-Land, it also changes the default video output to 60hz. It doesn't force 60hz on non PAL-optimised games though, unfortunately.. Most of my games are NTSC for that reason.