Sikkens Cetol SRD problem--help!!

[mimidiy]

We have a large deck & gazebo which a friend helped us build affordably. We just paid an arm & a leg to have someone stain it with sikkens SRD, medium or dark oak, I believe. Unfortunately--though we chose Sikkens for its longevity & beauty (unable to afford their $80/gal one that gives a furniture-like shine), we didn't realize that when we opted for SRD, instead of DEK, that SRD only comes in a MATTE finish, not satin or gloss. Because it is a little dark, it looks awful. (Also, the last worker on the job left dark blobs & streaks of color on the lowest level of the deck because earlier workers hadn't stirred it often, as required.)

We have already been through cleaning, sanding, re-sanding, and staining (we let it go too long & had to do it all over again) of this deck. We are just about broke, and certainly exhausted (we just finished our basement as well)! But after all this time & money, the VERY rustic-looking lack of shine is disappointing. Sikkens doesn't have any "approved" way of adding shine on top of Cetol (I called them). Does anyway know a way we can add some shine--perhaps with a golden tint--to Cetol SRD, without compromising its longevity, and without causing problems like making it cloudy or sticky?