GTP Dad-HELP-inside A/C condensation leak

GTP Dad

Thanks for your help last year... I was able to get water flowing out thru the drainpipe (of my Montana with dual A/C). This season it is worse, tho, and looks like I will have to get to the tray that feeds the drain pipe. That "tray" looks like it will be very hard to get to. So how to get to the tray, please? Or do I need to just drill a new hole in that tray and route a hose thru the floorpan?
Thanks in advance.

Judysvan