2006 Crusader 5.7 Captain's Choice EFI 20 amp fuel pump fuse keeps blowing

Please help, I am at wits end with this. Engine starts and runs fine at the dock for 4 to 10 minutes before fuel pump fuse blows. Gas is clean with no restrictions. Filters are brand-new. Low-pressure pump replaced last year. High-pressure fuel pump just replaced a month ago. Boat ran great after fuel pump was replaced last month on a 20 minute test run. It sat for two weeks, and now having this problem every time I start engine. Fuse and fuse block (the side of the fuse block where the fuse is) just gets hotter and hotter until it finally blows. This running at only 1500 RPM at dock. Just had fuel cleaned, so know it is not a fuel issue. Can somebody please lead me in the right direction? Thank you!

You need a DC Amp clamp to check the amperage draw of the fuel pump.

Because the pump is New does not mean that it is working correctly.

I agree. What is the correct amperage I should be looking for? Also, saw somebody mention in another post that the relay should have been replaced as well and that could be the culprit?