Went to lumber yard and got 1 2x8 and another pound of screws. Whew $20.00 and change just for that.
Ripped the 2x8 into three parts for the 2x joist. Saved a few bucks by not buying 3 2x4s, maybe $5.00
Dug the little trenches and set the 2xs into place. Cut and ran the decking boards. Lumber for decking boards was long enough so I cut them about 4 inches extra long. Done that so I could hang them over each side about 2 inches. Reason being is I needed to put screws near the outer edge of the board. Put a screw to close to a board edge will have more of a probability of splitting the board. With 2 inches extra cuts down of that probability. Snapped a line after screwing the boards down and then cut the ends off. The screws ended up about 3/4" from the end of the board. So there would have been a high probability of splitting. Ended up with no splits on the ends.
It's done anyhow. Looks good too. Something always looks good when you do it yourself even if there may be a flaw.
Been doing it 40 years so there are not to many flaws. LOL