The ornamental design for a gauchogrill with deeptray, as shown and described.
FIG. 1 is a front perspective view of a gaucho grill with deep tray, showing my new design;
FIG. 2 is a top elevation view thereof;
FIG. 3 is left side elevation view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a back elevation view thereof; and,
FIG. 6 is a bottom elevation view thereof.
The evenly broken lines are shown for the purpose of illustrating parts of the article that form no part of the claim. The dot-dash lines represent the boundaries of the claim and form no part thereof.