An extended low temperature mash around 145F-150F will yield a highly fermentable dry wort.
Raising the mash temperature helps but adding in a portion of rye malt or rye flakes can boost beta glucans. With an IPA a low percentage of rye won't really be noticed among the hops.
I brew light dry beers as it suits my water but I've found commercials like Leinenkugel add small portions of rye to their Kolsch-style ales to reduce the perception of thin beer.
Try it, just skip the beta glucanase rest, mash a bit higher, and don't overdo the rye addition beyond 5-10%.