While a shoot through hull ducer will work in your solid glass hull, it needs to start off with a bit more power (watts) than those units you are looking at can handle. Usually you will lose 20-40% of the signal strength shooting through a hull and yours will be on the high side of that estimate. Unless you are trying to fit to an existing sounder that has less than 600 watts of power available, you might look at using Airmars B60 or B164 units. These are "tilted-element" ducers and install like a normal through hull and they will give suprisingly good readings at all speeds. Very simple to install and you don't lose any power trying to shoot through a "blanket". Airmar (who makes virtually all ducers for all the major brands) makes them with pre-fitted cable ends that match nearly all units on the market.
Neither the "tank" or caulked-in ones will give you much of a return in less than 100' of water.