I would like to know if any one can help me figure this out. I know you can piece in small triangle scraps after but is there a way to cut an inside corner using one piece? Pictures would be very helpful.

I'm not sure I follow you. When I cover a compartment lid, I lay the carpet out, upside down and draw some arrows on it for what I will consider the front of the boat, making sure I also keep the lids in the proper orientation, so mark the insides of them with an arrow as you take them off This so I keep all the cuts in the same orientation, very important. Then I lay the lid upside down on the carpet and mark around it. I then add how much it's going to take to fold over the outer edge of the lid and up into the inner edge. Say if that's 1 1/2 inches, I add that to my lid piece all the way around. Easiest way to do that is to cut you a strip of wood and lay it against the lid, them mark along the edge of the strip. I cut it out around this line. I then lable that piece and draw an arrow on it in the direction of what would be the front of the boat.

When I'm ready to cover the lid, I use small paint roller and role DAP, Weldwood Orginal contact cement on the top of the lid, it's inside and outide edges and the carpet. AFter proper cure time, I carefully sit the lid on the carpet, lined up with the first set of marks I made around the lid itself and press it down. I cut a square notch from each corner, just don't cut all the way to the lid, stop at least an 1/4" from the lid or you will leave the metal corner exposed when you fold it around the edges. Fold it around the edges and rub it down good to make sure you have good contact.

Using contact glue, you don't have to screw around with clamps and waiting for indoor/outdoor carpet glue go dry.

Just remeber, it's called contact glue for a reason, no oh craps allowed.

The reason I stress maintaining proper orientation is if all pieces are not on the same bias, they will look different colors when the light hits them or looking at them from different angles.

I would like to know about the inside edge of the compartment where the lid goes not the actual lid itself. I have to cut my lids different because the corners have gaps. I saved all the old carpet for patterns. They used triangle pieces to fill in the inside edge. I'll take a picture later.

Here's what I am talking about. Use scrap to fill it in.