Basically, you want to hide in full sight. IF you don't and tuck deeper into that Phragmites sp. stand, you will likely have trouble picking birds up in the distance, allowing them to either fly by or be on you before you are prepared to shoot. I have the Classic TDB-17', which I picked-up to replace my TDB-14'. Two things I quickly discovered: the blind is easier to shoot out of than the one I had on the 14', because it is not quite as high; the boat's additional width alters the angle of the ambient light striking it, making grassing of the stern and foredeck areas far more important that it was with my TDB-14'.
You can have a rectangle of Killer Weed-1 pattern Avery Duramax 900 material sew-up in a single length panel or multiple panels with some 1/4" Dacron solid braid piping sewn-in in a channel around the edge with U-shaped cut-outs in the panel's edge to expose the cord in four "windows" on the long axis edges of the panel(s). Spring clamps painted drab marsh colors or flat black can then be used to hold this to your blind frame tubing at each of the windows, allowing you to move this to accommodate the number of shooters you have on-board. These will also enable you to decrease wind-flow through the blind, making life sitting over decoys more comfortable.
I would recommend you purchase a multi-color kit of raffia grass from Avery or another vendor and use it to grass the entire boat in. You can either zip-tie hanks to your grassing rails and blind webbing, or purchase light netting to attach the raffia bundles to and then zip-tie the netting to the various blind panels. Raffia doesn't break down with constant roll-up and down of your blind ;it doesn't absorb water easily; it is light weight, keeping your blind panels manageable to breakdown and store;and it will last for years. If you want to hang hanks off the grassing rails via zip-ties that is workable, or you can buy a roll of jute cordage and cut this into hanks to hang off the grassing rails.
If you grass the boat in well, you can sit right on the edge of cover, enabling you to have good sight distance on large expanses of marsh. In smaller marshes this will serve you well, too! Birds will likely work-in high in back bays, oxbows, or small open water since they have to come in over adjacent terrestrial cover. I can't tell you how many times I have had birds that are approaching high flair when the picked up the "black hole" in the marsh. YES, it does matter.
I just use a length of 1/4" bungee cord and stitch it through the pull handles cleats and deck hardware in a criss-cross pattern and the knot the ends together; then weave vegetation through these. The bungee cord doesn't undergo UV degradation while left on the boat during the off season or between hunts.
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Here is Steve Sanford's friend and gunning partner's TDB-17' Classic grassed-in very well...